Encycolorpedia

‎#505c5b أكواد الألوان الست عشرية

#505c5b Paint Chipالكود اللوني الست عشري‎#505c5b هو ظل متوسط​الإظلام للسيان.‏ في نموذج RGB للألوان يتكون ‎#505c5b من‎31.37% أحمر، و‎36.08% أخضر، و‎35.69% أزرق. وفي الفضاء اللوني HSL يتكون ‎#505c5b من صبغة لون175 درجة، و ‎7% تشبع، و ‎34% إضاءة. وهذا اللون له طول موجي يبلغ تقريباً 493.2 نانومتر.

الاختلافات اللون

ألوان مسماة

الألوان

تحميل: GIMP GPL Adobe ASE (Adobe Swatch Exchange) Sketch Palette

ألوان أحادية

  1. ‎#414c4b
  2. ‎#465150
  3. ‎#4b5756
  4. ‎#505c5b
  5. ‎#556160
  6. ‎#5b6766
  7. ‎#606c6b

الصبغات والظلال

‎#505c5b إلى الأبيض

  1. ‎#505c5b
  2. ‎#6b7574
  3. ‎#868f8e
  4. ‎#a3aaa9
  5. ‎#c1c6c5
  6. ‎#e0e2e2
  7. ‎#ffffff / #fff

‎#505c5b إلى الأسو

  1. ‎#505c5b
  2. ‎#434d4c
  3. ‎#363e3d
  4. ‎#2a2f2f
  5. ‎#1e2221
  6. ‎#131414
  7. ‎#000000 / #000

الدهانات

دهانات مماثلة

  1. Pantone / PMS

    1. ★ 445 CP
      ‎#4f5d5c
      ΔE = 0.690 / LRV ≈ 10.3%
    2. 10392 C
      ‎#4e5458
      ΔE = 4.581 / LRV ≈ 8.7%
  2. Diamond Vogel

    1. ★ Deep Space / 0487
      ‎#505d5d
      ΔE = 0.742 / LRV ≈ 10.3%
    2. Green Column / 0466
      ‎#525a54
      ΔE = 3.248 / LRV ≈ 9.7%
  3. Colortrend

    1. ★ 0487
      ‎#505d5d
      ΔE = 0.742 / LRV ≈ 10.3%
    2. Pointed Fir
      ‎#575d55
      ΔE = 4.567 / LRV ≈ 10.5%
  4. Behr

    1. ★ Midnight In Ny N440-7
      ‎#4e5a5a
      ΔE = 0.988 / LRV ≈ 9.7%
    2. Asphalt Gray N520-6
      ‎#5e5e5e
      ΔE = 4.468 / LRV ≈ 11.2%
  5. GM / General Motors

    1. ★ Granville Gray
      ‎#525b5b
      ΔE = 1.160 / LRV ≈ 10.0%
    2. Hampton Gray
      ‎#4d5453
      ΔE = 3.372 / LRV ≈ 8.5%
  6. Nippon Paint

    1. ★ Blue Eruption / NP N 2016 A
      ‎#4c5a5a
      ΔE = 1.280 / LRV ≈ 9.6%
    2. ★ Riverdance / NP N 2023 A
      ‎#555b59
      ΔE = 2.088 / LRV ≈ 10.1%
  7. Earthpaint

    1. ★ 5-29-6 Shadow Wood
      ‎#545c5a
      ΔE = 1.472 / LRV ≈ 10.3%
    2. 5-37-6 Griffin Grey
      ‎#53595e
      ΔE = 4.233 / LRV ≈ 9.8%
  8. Crown Diamond

    1. ★ 7398-73 Mingan Archipelago
      ‎#515a57
      ΔE = 1.656 / LRV ≈ 9.7%
    2. 7315-73 High Water
      ‎#475f5f
      ΔE = 3.721 / LRV ≈ 10.3%
  9. Tollens

    1. ★ T2134-3
      ‎#545b5b
      ΔE = 1.754 / LRV ≈ 10.1%
    2. ★ Bitume | EE200
      ‎#505955
      ΔE = 2.284 / LRV ≈ 9.5%
  10. Sigma

    1. ★ Natural Green / S 7502-G
      ‎#525a57
      ΔE = 1.857 / LRV ≈ 9.8%
    2. Mistic Purple / S 7005-R50B
      ‎#5c5f63
      ΔE = 4.907 / LRV ≈ 11.4%
  11. Dunn-Edwards

    1. ★ Soot / 215
      ‎#555e5f
      ΔE = 1.925 / LRV ≈ 10.8%
    2. Anchor Gray / 247
      ‎#596062
      ΔE = 3.281 / LRV ≈ 11.4%
  12. California Paints

    1. ★ DE 6321 - Soot
      ‎#555e5f
      ΔE = 1.925 / LRV ≈ 10.8%
    2. Classic Shutter
      ‎#4e5750
      ΔE = 4.116 / LRV ≈ 9.0%
  13. Valspar Paint

    1. ★ Slate Court
      ‎#56605f
      ΔE = 1.940 / LRV ≈ 11.2%
    2. Hematite
      ‎#5b5b5d
      ΔE = 4.689 / LRV ≈ 10.5%
  14. ICI Paints

    1. ★ Covered Bridge 30GG 13/046
      ‎#535c58
      ΔE = 1.999 / LRV ≈ 10.2%
    2. Palace Gate 50BG 13/077
      ‎#4c5d62
      ΔE = 3.624 / LRV ≈ 10.2%
  15. Natural Color System / NCS

    1. ★ S 6010-B30G
      ‎#4b5859
      ΔE = 2.062 / LRV ≈ 9.2%
    2. S 6010-B90G
      ‎#485950
      ΔE = 5.139 / LRV ≈ 9.1%
  16. General Paint

    1. ★ Cataract / CL 3087A
      ‎#565e5f
      ΔE = 2.166 / LRV ≈ 10.8%
    2. Altamira / CL 3076A
      ‎#525c60
      ΔE = 3.032 / LRV ≈ 10.3%
  17. Resene

    1. ★ River Bed B51-010-210
      ‎#556061
      ΔE = 2.175 / LRV ≈ 11.2%
    2. Limed Spruce WW14
      ‎#4e605e
      ΔE = 2.310 / LRV ≈ 10.8%
  18. Clark+Kensington

    1. Blossom Silhouettes / 30A-5
      ‎#4c5754
      ΔE = 2.397 / LRV ≈ 9.0%
    2. Garland Green / 28A-5
      ‎#575f56
      ΔE = 4.876 / LRV ≈ 10.9%
  19. Glidden

    1. Mostly Metal / PPG1036-7
      ‎#575e5f
      ΔE = 2.432 / LRV ≈ 10.9%
    2. Tundra Pond / 30BG 10/055
      ‎#4d5a5e
      ΔE = 2.966 / LRV ≈ 9.7%
  20. Caparol

    1. 47 4 120 / Moos 10
      ‎#4c5854
      ΔE = 2.467 / LRV ≈ 9.2%
    2. Schiefer 3
      ‎#585c58
      ΔE = 3.357 / LRV ≈ 10.4%
  21. KILZ

    1. Caviar Dream / H891
      ‎#4d5656
      ΔE = 2.514 / LRV ≈ 8.9%
  22. Peintures MF

    1. Laura
      ‎#545e59
      ΔE = 2.521 / LRV ≈ 10.6%
  23. Dupont

    1. CAS886
      ‎#536262
      ΔE = 2.523 / LRV ≈ 11.5%
    2. CAS918
      ‎#555f64
      ΔE = 3.908 / LRV ≈ 11.0%
  24. Berger

    1. Shady Place / 8310
      ‎#58615f
      ΔE = 2.558 / LRV ≈ 11.5%
    2. Great Graphite / 8302
      ‎#5e5f5d
      ΔE = 4.424 / LRV ≈ 11.4%
  25. Scib Paints

    1. Shady Place / 8310
      ‎#58615f
      ΔE = 2.558 / LRV ≈ 11.5%
    2. Charcoal Shadow / 8286
      ‎#565b5d
      ΔE = 3.006 / LRV ≈ 10.3%
  26. Sherwin-Williams

    1. Still Water - 6223
      ‎#4a5d5f
      ΔE = 2.673 / LRV ≈ 10.1%
    2. Peppercorn - 7674
      ‎#585858
      ΔE = 4.115 / LRV ≈ 9.8%
  27. Coronado Paint

    1. 8310 - Shady Place
      ‎#59605e
      ΔE = 2.696 / LRV ≈ 11.3%
    2. 8286 - Charcoal Shadow
      ‎#575b5b
      ΔE = 2.736 / LRV ≈ 10.3%
  28. Bristol

    1. Hidden Glade / P120-C7
      ‎#51625f
      ΔE = 2.824 / LRV ≈ 11.3%
    2. Great Lake Blue / P118-C7
      ‎#49585d
      ΔE = 3.889 / LRV ≈ 9.2%
  29. Marston & Langinger

    1. Slate Blue
      ‎#556361
      ΔE = 2.839 / LRV ≈ 11.7%
  30. Humbrol

    1. 27 Sea Grey
      ‎#525d57
      ΔE = 2.859 / LRV ≈ 10.3%
    2. 75 Bronze Green
      ‎#4e615d
      ΔE = 3.160 / LRV ≈ 11.0%
  31. Sico

    1. 6202-73 Narwhal Grey
      ‎#515e58
      ΔE = 2.882 / LRV ≈ 10.5%
    2. 6162-73 Ocean Deep
      ‎#50635d
      ΔE = 4.199 / LRV ≈ 11.4%
  32. Vista Paint

    1. Charcoal Shadow
      ‎#565b5d
      ΔE = 3.006 / LRV ≈ 10.3%
    2. Thunder
      ‎#575c56
      ΔE = 3.833 / LRV ≈ 10.4%
  33. Devoe Paint

    1. Black Sable / 90BG 10/067
      ‎#515b5f
      ΔE = 3.020 / LRV ≈ 10.1%
    2. Bohemian Blue / 30BG 10/111
      ‎#455e60
      ΔE = 4.184 / LRV ≈ 10.1%
  34. Vallejo

    1. Vallejo 70.865 #177
      ‎#54595b
      ΔE = 3.053 / LRV ≈ 9.8%
    2. Vallejo 70.991 #159
      ‎#5d6165
      ΔE = 5.044 / LRV ≈ 11.8%
  35. Federal Standard

    1. Federal Standard 26081
      ‎#585b5b
      ΔE = 3.074 / LRV ≈ 10.3%
    2. Federal Standard 16081
      ‎#555856
      ΔE = 3.269 / LRV ≈ 9.6%
  36. Trabant

    1. Delphingrau / 701
      ‎#566463
      ΔE = 3.212 / LRV ≈ 12.0%
  37. Toyo Ink

    1. CF10998
      ‎#545e62
      ΔE = 3.221 / LRV ≈ 10.8%
    2. CF10889
      ‎#4f645e
      ΔE = 4.700 / LRV ≈ 11.6%
  38. Duron

    1. Night Owl
      ‎#5b5f5e
      ΔE = 3.280 / LRV ≈ 11.2%
  39. Jotun

    1. 5180 / Oslo
      ‎#526064
      ΔE = 3.313 / LRV ≈ 11.1%
    2. 0347 / Malmblå
      ‎#505d63
      ΔE = 4.019 / LRV ≈ 10.4%
  40. Ford

    1. Medium Dark Pewter
      ‎#535754
      ΔE = 3.350 / LRV ≈ 9.3%
    2. Gunmetal
      ‎#565656
      ΔE = 4.326 / LRV ≈ 9.3%
  41. Rodda Paint

    1. Volute H62
      ‎#495b5f
      ΔE = 3.351 / LRV ≈ 9.7%
    2. Gedney Green H96
      ‎#43544f
      ΔE = 4.821 / LRV ≈ 8.1%
  42. Brighto Paints

    1. 5-31-7 Night Hush
      ‎#475b5e
      ΔE = 3.355 / LRV ≈ 9.6%
    2. 5-37-6 Griffin Grey
      ‎#586268
      ΔE = 5.012 / LRV ≈ 11.8%
  43. Afnor

    1. Gris Bleu Moyen Clair N 2 / 1625
      ‎#52585b
      ΔE = 3.356 / LRV ≈ 9.5%
  44. Magnolia Home

    1. Beautiful Acres / JG-73
      ‎#465a56
      ΔE = 3.484 / LRV ≈ 9.3%
    2. Regal Leaf / JG-72
      ‎#4e5c52
      ΔE = 5.043 / LRV ≈ 9.9%
  45. RAL

    1. RAL 7011 / Iron Grey
      ‎#52595d
      ΔE = 3.542 / LRV ≈ 9.7%
    2. RAL 7010 / Tarpaulin Grey
      ‎#585c56
      ΔE = 4.106 / LRV ≈ 10.4%
  46. Volkswagen

    1. Cirrus Gray
      ‎#475659
      ΔE = 3.576 / LRV ≈ 8.7%
    2. Quartz Gray
      ‎#545c62
      ΔE = 4.408 / LRV ≈ 10.4%
  47. New Look

    1. Merlins Magic / A04-03
      ‎#525c61
      ΔE = 3.597 / LRV ≈ 10.3%
  48. Colorhouse

    1. Metal .05
      ‎#535654
      ΔE = 3.605 / LRV ≈ 9.1%
  49. Levis

    1. Full Marble
      ‎#5c6262
      ΔE = 3.657 / LRV ≈ 11.9%
    2. Atl Matin A6
      ‎#616160
      ΔE = 5.156 / LRV ≈ 11.9%
  50. Audi

    1. Dolomitgrau Pearl/Dolomite Gray Pearl / 6H, 6H6H, LZ7J
      ‎#4d5558
      ΔE = 3.718 / LRV ≈ 8.8%
    2. Aviatorblau Perleffekt / LX5N, U0U0, X5N
      ‎#4a5457
      ΔE = 3.940 / LRV ≈ 8.5%
  51. Taubmans

    1. Jolly Roger / T12 8.F12
      ‎#54585b
      ΔE = 3.811 / LRV ≈ 9.6%
    2. Knight Grey / T10 50L-1
      ‎#5e5e5c
      ΔE = 4.649 / LRV ≈ 11.2%
  52. Ralph Lauren

    1. Sheen River / RLNA234
      ‎#545853
      ΔE = 3.852 / LRV ≈ 9.5%
    2. Palais Royal / RLTH236
      ‎#575756
      ΔE = 4.289 / LRV ≈ 9.5%
  53. Chrysler

    1. Southern Gray
      ‎#46575b
      ΔE = 3.916 / LRV ≈ 8.9%
    2. Cottonwood Gray
      ‎#595959
      ΔE = 4.070 / LRV ≈ 10.0%
  54. Model Master

    1. Model Master 1791
      ‎#555754
      ΔE = 3.941 / LRV ≈ 9.4%
    2. Model Master 18123
      ‎#5d5d5f
      ΔE = 4.876 / LRV ≈ 11.0%
  55. PPG Pittsburgh Paints

    1. Knight's Armor / PPG1001-6
      ‎#5c5d5d
      ΔE = 3.965 / LRV ≈ 10.9%
    2. Submarine 507-6
      ‎#5d635f
      ΔE = 4.259 / LRV ≈ 12.1%
  56. Olympic

    1. Knight's Armor D58-5
      ‎#5c5d5d
      ΔE = 3.965 / LRV ≈ 10.9%
    2. Dark Green Velvet D62-6
      ‎#4c5950
      ΔE = 4.757 / LRV ≈ 9.3%
  57. Porter Paints

    1. Knight's Armor / 518-6
      ‎#5c5d5d
      ΔE = 3.965 / LRV ≈ 10.9%
    2. Submarine / 507-6
      ‎#5d635f
      ΔE = 4.259 / LRV ≈ 12.1%
  58. Volvo

    1. Baltic Sea Blue / 1619
      ‎#556065
      ΔE = 3.980 / LRV ≈ 11.2%
  59. Sikkens

    1. K1.04.32 (RAL 7010)
      ‎#575a55
      ΔE = 3.992 / LRV ≈ 10.0%
    2. H7.06.25
      ‎#585a54
      ΔE = 4.675 / LRV ≈ 10.0%
  60. Dulux

    1. Night Jewels 2
      ‎#555656
      ΔE = 4.040 / LRV ≈ 9.3%
    2. Smokey Slate
      ‎#5b6466
      ΔE = 4.178 / LRV ≈ 12.3%
  61. Pratt & Lambert

    1. Brafferton Blue CW617
      ‎#505b61
      ΔE = 4.071 / LRV ≈ 10.1%
    2. Lava 28-17
      ‎#535d63
      ΔE = 4.213 / LRV ≈ 10.6%
  62. Tamiya

    1. Tamiya 80010,X10
      ‎#505558
      ΔE = 4.102 / LRV ≈ 8.9%
    2. Tamiya 80356,XF56
      ‎#5c6164
      ΔE = 4.401 / LRV ≈ 11.7%
  63. Evonik-Degussa

    1. 4233D Trojan Gray
      ‎#5c6465
      ΔE = 4.108 / LRV ≈ 12.3%
    2. 4243D Stoker Gray
      ‎#5d6765
      ΔE = 4.751 / LRV ≈ 13.0%
  64. Asian Paints

    1. Dense Forest / 9253
      ‎#435c5d
      ΔE = 4.160 / LRV ≈ 9.6%
    2. Abyss / 8365
      ‎#51584f
      ΔE = 5.102 / LRV ≈ 9.3%
  65. McCormick Paints

    1. 472 Drum Hill Grey
      ‎#5e6260
      ΔE = 4.170 / LRV ≈ 12.0%
  66. Benjamin Moore

    1. Temptation / 1609
      ‎#55595d
      ΔE = 4.183 / LRV ≈ 9.9%
    2. Ashwood Moss / 1484
      ‎#575952
      ΔE = 5.098 / LRV ≈ 9.8%
  67. CIL

    1. Covered Bridge
      ‎#5c6562
      ΔE = 4.187 / LRV ≈ 12.5%
    2. Obsidian Glass
      ‎#5e5e5e
      ΔE = 4.468 / LRV ≈ 11.2%
  68. 1829

    1. Grate Black
      ‎#5b5b5a
      ΔE = 4.188 / LRV ≈ 10.4%
    2. Lincoln Green
      ‎#52625a
      ΔE = 4.513 / LRV ≈ 11.3%
  69. Cloverdale Paint

    1. Cape Royal / 8341
      ‎#425556
      ΔE = 4.192 / LRV ≈ 8.3%
    2. Charcoal Shadow / 8286
      ‎#5f6364
      ΔE = 4.662 / LRV ≈ 12.3%
  70. Brillux

    1. 81.03.27
      ‎#48534f
      ΔE = 4.192 / LRV ≈ 8.1%
    2. 75.06.27
      ‎#475152
      ΔE = 4.611 / LRV ≈ 7.8%
  71. British Standard

    1. BS 4800 00 A 13 - Storm grey / Greyfriar
      ‎#5c5c5c
      ΔE = 4.192 / LRV ≈ 10.7%
  72. AMC

    1. Dover Gray
      ‎#5e625f
      ΔE = 4.300 / LRV ≈ 11.9%
    2. Gray Mist
      ‎#555553
      ΔE = 4.721 / LRV ≈ 9.1%
  73. Tikkurila

    1. 0514 / Graphite gray
      ‎#56585b
      ΔE = 4.367 / LRV ≈ 9.7%
    2. S493 / Epidote
      ‎#5a6668
      ΔE = 4.558 / LRV ≈ 12.7%
  74. Kelly-Moore

    1. Defense / AC260-5
      ‎#535453
      ΔE = 4.464 / LRV ≈ 8.8%
    2. Spinach Dipped / KM3872-5
      ‎#50584f
      ΔE = 5.001 / LRV ≈ 9.2%
  75. Nature Paint

    1. Chough
      ‎#4f5355
      ΔE = 4.470 / LRV ≈ 8.5%
  76. Australian Standard AS2700

    1. N63 Pewter
      ‎#596065
      ΔE = 4.572 / LRV ≈ 11.4%
    2. N54 Basalt
      ‎#585c62
      ΔE = 5.185 / LRV ≈ 10.6%
  77. Sto

    1. 36142
      ‎#485c54
      ΔE = 4.789 / LRV ≈ 9.7%
  78. Mylands of London

    1. Privet Green
      ‎#556769
      ΔE = 4.819 / LRV ≈ 12.7%
  79. Pascol

    1. Pale Tungsten PZ2110
      ‎#606564
      ΔE = 4.886 / LRV ≈ 12.7%
    2. Pale Tungsten PZ2110
      ‎#606565
      ΔE = 4.946 / LRV ≈ 12.7%
  80. Dulux Australia

    1. Angry Ocean / A299
      ‎#4e6664
      ΔE = 4.933 / LRV ≈ 12.0%
    2. Raku / GR11
      ‎#5a5858
      ΔE = 5.114 / LRV ≈ 9.9%
  81. Alcro

    1. Pigeon grey
      ‎#4a5050
      ΔE = 4.977 / LRV ≈ 7.8%
  82. Nerolac

    1. Spruce Grove - 2945
      ‎#49504e
      ΔE = 4.996 / LRV ≈ 7.7%
    2. Green Guide - 4563
      ‎#515a50
      ΔE = 5.219 / LRV ≈ 9.6%
  83. Flügger

    1. Koksgrå (IN-596)
      ‎#4e5152
      ΔE = 5.022 / LRV ≈ 8.1%
  84. Wattyl

    1. Sashimi / F61W
      ‎#5b6058
      ΔE = 5.116 / LRV ≈ 11.3%
  85. Jaguar

    1. Coachline Light Blue / JSC154
      ‎#3e595b
      ΔE = 5.234 / LRV ≈ 8.9%

‎#505c5b HTML / CSS أمثلة على الرمز

‎#505c5b الصدارة

الصدق أمانة والكذب خيانة

<p style="color: #505c5b">…</p>

‎#505c5b الخلفية

عيش وملح.

<p style="background-color: #505c5b">…</p>

‎#505c5b ظل النص

الصوت عالى والفراش خالى

<p style="text-shadow: 0.1em 0.1em 0.15em #505c5b">…</p>

الرسوم البيانية للون

تحويلات مساحة اللون

عشري
5266523
الثنائية
01010000, 01011100, 01011011
عشري
#505c5b
LRV
≈ 10.1%
أقرب لون ست عشري قصير
#455 ΔE = 3.655
RGB
rgb(80, 92, 91)
RGBA
rgba(80, 92, 91, 1.0)
rg اللونية
r: 0.304, g: 0.350, b: 0.346
RYB
أحمر: 31.373%, أصفر: 33.828%, أزرق: 36.078%
Android / android.graphics.Color
-11510693 / 0xff505c5b
HSL
hsl(175, 7%, 34%)
HSLA
hsla(175, 7%, 34%, 1.0)
HSV / HSB
صبغة: 175° (175.000), تشبع: 13% (0.130), قيمة: 36% (0.361)
HSP
صبغة: 175.000, تشبع: 13.043%, السطوع المدركة: 34.692%
HSLuv (HUSL)
H: 185.295, S: 20.894, L: 38.048
Cubehelix
H: -193.151, S: 0.082, L: 0.346
TSL
T: -1.409, S: 0.045, L: 0.346
CMYK
سيان: 13% (0.130), ماجنتي: 0% (0.000), أصفر: 1% (0.011), أسود: 64% (0.639)
CMY
سيان: 69% (0.686), ماجنتي: 64% (0.639), أصفر: 64% (0.643)
XYZ
X: 9.023, Y: 10.115, Z: 11.372
xyY
x: 0.296, y: 0.332, Y: 10.115
CIELab
L: 38.048, a: -4.872, b: -1.002
CIELuv
L: 38.048, u: -6.241, v: -0.578
CIELCH / LCHab
L: 38.048, C: 4.974, H: 191.620
CIELUV / LCHuv
L: 38.048, C: 6.268, H: 185.295
Hunter-Lab
L: 31.804, a: -5.014, b: 1.062
CIECAM02
J: 28.270, C: 8.744, h: 194.477, Q: 104.755, M: 7.646, s: 27.017, H: 245.727
OSA-UCS
خفة: -10.075, أصفر: -0.215, أخضر: 0.974
LMS
L: 9.111, M: 10.891, S: 11.348
YCbCr
Y: 91.846, Cb: 129.337, Cr: 122.803
YCoCg
Y: 88.750, Cg: 3.250, Co: 17.250
YDbDr
Y: 88.298, Db: 4.067, Dr: 15.779
YPbPr
Y: 89.372, Pb: 0.880, Pr: -5.954
xvYCC
Y: 92.755, Cb: 128.773, Cr: 122.770
YIQ
Y: 88.298, I: -6.827, Q: -2.849
YUV
Y: 88.298, U: 1.330, V: -7.280
نظام الألوان مونسل
10BG 4/1 ΔE = 2.987
لون العلامة التجارية
Deviantart ΔE = 7.165

ألوان عشوائية

أحمر

أخضر

أزرق