Encycolorpedia

‎#8391b0 أكواد الألوان الست عشرية

#8391b0 Paint Chipالكود اللوني الست عشري‎#8391b0 هو ظل متوسط الإضاءة للأزرق.‏ في نموذج RGB للألوان يتكون ‎#8391b0 من‎51.37% أحمر، و‎56.86% أخضر، و‎69.02% أزرق. وفي الفضاء اللوني HSL يتكون ‎#8391b0 من صبغة لون221 درجة، و ‎22% تشبع، و ‎60% إضاءة. وهذا اللون له طول موجي يبلغ تقريباً 475.17 نانومتر.

الاختلافات اللون

ألوان مسماة

الألوان

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

‎#8391b0 انحدار خطي إلى التكميلي ‎#aaa389

  1. ‎#8391b0
  2. ‎#8b94aa
  3. ‎#9297a3
  4. ‎#989a9d
  5. ‎#9f9d96
  6. ‎#a4a090
  7. ‎#aaa389

ألوان أحادية

  1. ‎#687694
  2. ‎#717f9d
  3. ‎#7a88a7
  4. ‎#8391b0
  5. ‎#8c9aba
  6. ‎#95a3c3
  7. ‎#9fadcd

الصبغات والظلال

‎#8391b0 إلى الأبيض

  1. ‎#8391b0
  2. ‎#97a2bd
  3. ‎#acb4ca
  4. ‎#c0c7d7
  5. ‎#d5d9e4
  6. ‎#eaecf2
  7. ‎#ffffff / #fff

‎#8391b0 إلى الأسو

  1. ‎#8391b0
  2. ‎#6c7790
  3. ‎#565f72
  4. ‎#414754
  5. ‎#2d3039
  6. ‎#1a1c1f
  7. ‎#000000 / #000

الدهانات

دهانات مماثلة

  1. Coronado Paint

    1. ★ 7224 - Kings Court
      ‎#8290ad
      ΔE = 0.793 / LRV ≈ 27.7%
    2. 7192 - Barrymore
      ‎#9294aa
      ΔE = 4.290 / LRV ≈ 30.2%
  2. Ford

    1. ★ Gray
      ‎#8393b2
      ΔE = 0.813 / LRV ≈ 28.9%
    2. Light Opal
      ‎#7a90ac
      ΔE = 2.761 / LRV ≈ 27.1%
  3. Dutch Boy

    1. ★ Space Age
      ‎#808eac
      ΔE = 1.220 / LRV ≈ 26.9%
    2. Cheboygan Blue
      ‎#798da3
      ΔE = 4.489 / LRV ≈ 25.8%
  4. Earthpaint

    1. ★ 3-38-4 Moonstone Hue
      ‎#7e8fae
      ΔE = 1.241 / LRV ≈ 27.1%
    2. 3-40-4 Lilac Sachet
      ‎#8b90af
      ΔE = 2.424 / LRV ≈ 28.5%
  5. Dulux

    1. ★ 70BB 27/201
      ‎#808eaf
      ΔE = 1.285 / LRV ≈ 27.0%
    2. Midnight Iris 2 / 90BB 32/126
      ‎#9194ab
      ΔE = 3.912 / LRV ≈ 30.1%
  6. RAL

    1. ★ RAL 280 60 20
      ‎#8390b3
      ΔE = 1.430 / LRV ≈ 28.0%
    2. RAL 610-M
      ‎#7897b5
      ΔE = 4.475 / LRV ≈ 29.5%
  7. Devoe Paint

    1. ★ Grandeur / 70BB 28/224
      ‎#838eb0
      ΔE = 1.660 / LRV ≈ 27.3%
    2. Bangor Blue / 50BB 33/164
      ‎#8d9ab0
      ΔE = 4.392 / LRV ≈ 31.9%
  8. Asian Paints

    1. ★ Grape Spread / 9160
      ‎#8895b2
      ΔE = 1.673 / LRV ≈ 29.9%
    2. Blue Pottery / 7271
      ‎#7f98c3
      ΔE = 4.630 / LRV ≈ 30.9%
  9. General Paint

    1. ★ Nova / CL 2374D
      ‎#8295b5
      ΔE = 1.716 / LRV ≈ 29.6%
    2. Hydrangea / CL 2354D
      ‎#7e9ac5
      ΔE = 5.161 / LRV ≈ 31.6%
  10. Olympic

    1. ★ Fresh Lavender B45-4
      ‎#8a93b2
      ΔE = 1.731 / LRV ≈ 29.5%
    2. Evening Hush C47-4
      ‎#798ea6
      ΔE = 3.913 / LRV ≈ 26.2%
  11. Scib Paints

    1. ★ Kings Court / 7224
      ‎#8991b2
      ΔE = 1.918 / LRV ≈ 28.8%
    2. Postcard Perfect / 7295
      ‎#6e91b3
      ΔE = 4.911 / LRV ≈ 26.8%
  12. Vista Paint

    1. ★ King's Court
      ‎#8991b2
      ΔE = 1.918 / LRV ≈ 28.8%
    2. Postcard Perfect
      ‎#6e91b3
      ΔE = 4.911 / LRV ≈ 26.8%
  13. Auro

    1. ★ Artichoke
      ‎#8890aa
      ΔE = 1.976 / LRV ≈ 28.1%
  14. Volkswagen

    1. ★ Silver Blue
      ‎#7f94b2
      ΔE = 2.030 / LRV ≈ 28.9%
    2. ★ Glacier Blue
      ‎#898fac
      ΔE = 2.100 / LRV ≈ 27.9%
  15. ICI Paints

    1. ★ Basin Street Blue 70BB 33/202
      ‎#8492b7
      ΔE = 2.045 / LRV ≈ 28.9%
    2. 4273 Elevator 10RB 35/167
      ‎#9692b0
      ΔE = 5.178 / LRV ≈ 30.2%
  16. Brillux

    1. ★ 54.15.15
      ‎#8492b7
      ΔE = 2.045 / LRV ≈ 28.9%
    2. 54.12.18
      ‎#8a97b8
      ΔE = 2.524 / LRV ≈ 31.0%
  17. Duron

    1. ★ Bracing Blue
      ‎#7c91ae
      ΔE = 2.177 / LRV ≈ 27.6%
    2. Leisure Blue
      ‎#6d91b5
      ΔE = 5.027 / LRV ≈ 26.8%
  18. Valspar Paint

    1. ★ Merlin
      ‎#828ca7
      ΔE = 2.261 / LRV ≈ 26.3%
    2. Peri Wink R182C
      ‎#9197ad
      ΔE = 4.133 / LRV ≈ 31.2%
  19. Colortrend

    1. ★ Swell
      ‎#8595af
      ΔE = 2.289 / LRV ≈ 29.6%
    2. 0618
      ‎#7393b4
      ΔE = 4.193 / LRV ≈ 27.8%
  20. Dulux Australia

    1. Sapphire Blue / G85
      ‎#8597b8
      ΔE = 2.308 / LRV ≈ 30.6%
  21. New Look

    1. Dynamic Duo / F30-09
      ‎#8492aa
      ΔE = 2.355 / LRV ≈ 28.4%
    2. Starburst Galaxy / F30-03
      ‎#9196bf
      ΔE = 5.193 / LRV ≈ 31.6%
  22. Wattyl

    1. Acapulco Violet / D79W
      ‎#8492aa
      ΔE = 2.355 / LRV ≈ 28.4%
    2. Agapantha / D67W
      ‎#8089af
      ΔE = 3.871 / LRV ≈ 25.6%
  23. Sigma

    1. Mistic Purple / S 3030-R70B
      ‎#8496ba
      ΔE = 2.419 / LRV ≈ 30.3%
    2. Mistic Purple / S 4020-R70B
      ‎#7b89a3
      ΔE = 3.613 / LRV ≈ 24.7%
  24. Crown Diamond

    1. 7354-42 Subtle Lavender
      ‎#8094af
      ΔE = 2.456 / LRV ≈ 28.9%
    2. 7351-52 Lively Purple
      ‎#8087a9
      ΔE = 4.002 / LRV ≈ 24.8%
  25. Opaltone / OMS

    1. 6119
      ‎#7e94b9
      ΔE = 2.465 / LRV ≈ 29.1%
    2. 6405
      ‎#7f869e
      ΔE = 4.680 / LRV ≈ 24.0%
  26. Peintures MF

    1. Cape May
      ‎#7a8caf
      ΔE = 2.524 / LRV ≈ 26.0%
    2. Grande rivière
      ‎#748ca7
      ΔE = 4.243 / LRV ≈ 25.3%
  27. Diamond Vogel

    1. Celestial Horizon / 0589
      ‎#8297b6
      ΔE = 2.544 / LRV ≈ 30.3%
    2. Heavenly Sky / 0618
      ‎#7393b4
      ΔE = 4.193 / LRV ≈ 27.8%
  28. ECOS Paints

    1. Celestial Horizon (0589)
      ‎#8297b6
      ΔE = 2.544 / LRV ≈ 30.3%
    2. Heavenly Sky (0618)
      ‎#7393b4
      ΔE = 4.193 / LRV ≈ 27.8%
  29. Porter Paints

    1. Evening Hush / 447-5
      ‎#7c8ba8
      ΔE = 2.546 / LRV ≈ 25.6%
    2. Blueberry Muffin / 547-5
      ‎#8290a6
      ΔE = 3.091 / LRV ≈ 27.4%
  30. Glidden

    1. Evening Hush / PPG1165-5
      ‎#7b8ca8
      ΔE = 2.638 / LRV ≈ 25.8%
    2. Blueberry Muffin / PPG1164-5
      ‎#8290a6
      ΔE = 3.091 / LRV ≈ 27.4%
  31. Beckers

    1. Stålblå 782 / S 3614-B11G
      ‎#8c90ac
      ΔE = 2.669 / LRV ≈ 28.5%
  32. Tamiya

    1. Tamiya 80325,XF25
      ‎#7a8ba9
      ΔE = 2.700 / LRV ≈ 25.5%
  33. Cloverdale Paint

    1. Grape Gathering / 7199
      ‎#858caf
      ΔE = 2.834 / LRV ≈ 26.8%
    2. Kings Court / 7224
      ‎#8b9bb6
      ΔE = 3.899 / LRV ≈ 32.3%
  34. Resene

    1. Beyond B66-035-274
      ‎#808aac
      ΔE = 2.840 / LRV ≈ 25.7%
    2. Ship Cove B66-039-263
      ‎#7988ab
      ΔE = 3.663 / LRV ≈ 24.6%
  35. Matthews Paint

    1. Blue Nose / 7455
      ‎#7993b3
      ΔE = 2.894 / LRV ≈ 28.2%
    2. Baby Blue Metallic / 45612
      ‎#8e9cc2
      ΔE = 4.908 / LRV ≈ 33.4%
  36. Tikkurila

    1. 2106
      ‎#8c98b4
      ΔE = 2.903 / LRV ≈ 31.3%
    2. 2107
      ‎#7792af
      ΔE = 3.593 / LRV ≈ 27.6%
  37. Pratt & Lambert

    1. Regal Haze 29-10
      ‎#8c92b5
      ΔE = 2.922 / LRV ≈ 29.5%
    2. Dusk Sky 27-23
      ‎#708eab
      ΔE = 4.807 / LRV ≈ 25.7%
  38. Federal Standard

    1. Federal Standard 35231
      ‎#7d91b9
      ΔE = 2.924 / LRV ≈ 28.1%
    2. Federal Standard 25240
      ‎#7f99bb
      ΔE = 3.648 / LRV ≈ 30.9%
  39. CIL

    1. Harlequin
      ‎#788fb5
      ΔE = 2.933 / LRV ≈ 27.0%
    2. Bangor Blue
      ‎#8b9ab6
      ΔE = 3.462 / LRV ≈ 32.0%
  40. Clark+Kensington

    1. Tremezzo / 39B-5
      ‎#8c93b7
      ΔE = 3.058 / LRV ≈ 29.9%
    2. Hamilton Heights / 40B-5
      ‎#898ba7
      ΔE = 3.534 / LRV ≈ 26.6%
  41. PPG Pittsburgh Paints

    1. Blueberry Muffin / PPG1164-5
      ‎#8290a6
      ΔE = 3.091 / LRV ≈ 27.4%
    2. Prophetic Sea / PPG1042-5
      ‎#818b9c
      ΔE = 5.084 / LRV ≈ 25.5%
  42. California Paints

    1. DE 5885 - Denim Tradition
      ‎#7f97b5
      ΔE = 3.102 / LRV ≈ 30.0%
    2. DE 5879 - Ocean City
      ‎#7896ba
      ΔE = 3.806 / LRV ≈ 29.3%
  43. Chrysler

    1. Bluebonnet Blue
      ‎#788eaa
      ΔE = 3.121 / LRV ≈ 26.2%
    2. Blue
      ‎#7e8da4
      ΔE = 3.330 / LRV ≈ 26.2%
  44. AMC

    1. Viscount Medium Blue
      ‎#8296af
      ΔE = 3.245 / LRV ≈ 29.7%
    2. Light Baltic
      ‎#7990a7
      ΔE = 4.363 / LRV ≈ 26.8%
  45. Plascon

    1. Morning Fog B4-E2-2
      ‎#7890b8
      ΔE = 3.338 / LRV ≈ 27.4%
    2. Mirage Jet B3-E2-2
      ‎#7490b0
      ΔE = 3.590 / LRV ≈ 26.8%
  46. Pantone / PMS

    1. 652
      ‎#788cb3
      ΔE = 3.388 / LRV ≈ 26.0%
    2. 645
      ‎#7d99ba
      ΔE = 3.946 / LRV ≈ 30.7%
  47. Jotun

    1. 4197 / Celeber
      ‎#8d8fb0
      ΔE = 3.420 / LRV ≈ 28.4%
  48. Natural Color System / NCS

    1. S 3020-R80B
      ‎#7c88a5
      ΔE = 3.446 / LRV ≈ 24.6%
    2. S 3020-R90B
      ‎#7389a2
      ΔE = 5.064 / LRV ≈ 24.1%
  49. Levis

    1. Shady Purple A40
      ‎#8599b4
      ΔE = 3.471 / LRV ≈ 31.1%
    2. Atl Soleil B8
      ‎#8699ad
      ΔE = 5.027 / LRV ≈ 30.9%
  50. Caparol

    1. Atlas / Atlas F3
      ‎#8894a8
      ΔE = 3.696 / LRV ≈ 29.2%
    2. 67 21 218 / Eisenoxidschwarz 35
      ‎#9090b0
      ΔE = 3.920 / LRV ≈ 29.0%
  51. Benjamin Moore

    1. Violet Stone / 2069-40
      ‎#8f90b1
      ΔE = 3.734 / LRV ≈ 29.0%
    2. Irises / 1440
      ‎#858a9b
      ΔE = 5.216 / LRV ≈ 25.5%
  52. Sto

    1. 34410
      ‎#728eb0
      ΔE = 3.795 / LRV ≈ 26.1%
    2. 34310
      ‎#7b85a0
      ΔE = 4.671 / LRV ≈ 23.5%
  53. Loop

    1. Monpellier / LP-215
      ‎#7c97b4
      ΔE = 3.815 / LRV ≈ 29.7%
  54. Tollens

    1. TF254-3
      ‎#7490ae
      ΔE = 3.850 / LRV ≈ 26.7%
    2. T2095-1
      ‎#9092b6
      ΔE = 4.100 / LRV ≈ 29.9%
  55. Ressource Peintures

    1. Deep Wedgwood Blue / HC90
      ‎#738aaa
      ΔE = 3.920 / LRV ≈ 24.7%
    2. Della Robbia Blue / HC108
      ‎#7d99c0
      ΔE = 4.269 / LRV ≈ 30.9%
  56. Dunn-Edwards

    1. Charcoal Dust / 768
      ‎#9497b3
      ΔE = 4.194 / LRV ≈ 31.7%
    2. Downpour / 577
      ‎#819ab1
      ΔE = 5.235 / LRV ≈ 31.0%
  57. Nippon Paint

    1. Grape Gate / NP PB 1490 T
      ‎#7e8fbb
      ΔE = 4.196 / LRV ≈ 27.7%
    2. Evening Dresses / NP PB 1461 T
      ‎#9494ac
      ΔE = 4.527 / LRV ≈ 30.5%
  58. McCormick Paints

    1. Pale Orchid
      ‎#7e889f
      ΔE = 4.246 / LRV ≈ 24.5%
  59. Evonik-Degussa

    1. 5212T Blue Wainscot
      ‎#8398af
      ΔE = 4.267 / LRV ≈ 30.4%
    2. 7192T Xerxes Blue
      ‎#8e9dc0
      ΔE = 4.752 / LRV ≈ 33.7%
  60. Sikkens

    1. T9.15.55
      ‎#899cb7
      ΔE = 4.313 / LRV ≈ 32.5%
    2. T3.14.55
      ‎#8497ac
      ΔE = 4.403 / LRV ≈ 30.0%
  61. Nerolac

    1. Blue Abundance - 4238
      ‎#7d96c1
      ΔE = 4.319 / LRV ≈ 30.0%
    2. Absicon - 2383
      ‎#6d8bac
      ΔE = 4.961 / LRV ≈ 24.7%
  62. Taubmans

    1. Violet Note / T12 38.F9
      ‎#8287a0
      ΔE = 4.324 / LRV ≈ 24.6%
    2. Violet Veil / T12 38.E10
      ‎#9597ab
      ΔE = 5.173 / LRV ≈ 31.5%
  63. Kelly-Moore

    1. Tianna's Eyes / KM3094-2
      ‎#8e96a9
      ΔE = 4.345 / LRV ≈ 30.4%
    2. Piece of the Sky / KM3125-2
      ‎#7b99b4
      ΔE = 5.045 / LRV ≈ 30.3%
  64. Albany Paint

    1. French Blue
      ‎#8d9cb6
      ΔE = 4.360 / LRV ≈ 32.8%
  65. Brighto Paints

    1. 4-39-4 Violet Illusion
      ‎#8f9bb3
      ΔE = 4.375 / LRV ≈ 32.5%
    2. 3-39-4 Misty Lilac
      ‎#919dc1
      ΔE = 5.150 / LRV ≈ 34.0%
  66. KILZ

    1. Hailstorm / B792
      ‎#919bb4
      ΔE = 4.400 / LRV ≈ 32.8%
    2. Sea Lavender / B771
      ‎#919eb8
      ΔE = 5.135 / LRV ≈ 33.9%
  67. Sico

    1. 6172-52 Mozart
      ‎#8c97aa
      ΔE = 4.422 / LRV ≈ 30.6%
  68. TRUMATCH

    1. 34-e4
      ‎#879dbd
      ΔE = 4.486 / LRV ≈ 32.9%
    2. 37-c3
      ‎#7d8bb8
      ΔE = 5.010 / LRV ≈ 26.3%
  69. Focoltone

    1. 1060
      ‎#7091b8
      ΔE = 4.514 / LRV ≈ 27.2%
  70. GM / General Motors

    1. Medium Slate
      ‎#7d8b9f
      ΔE = 4.539 / LRV ≈ 25.3%
    2. Light Adriatic
      ‎#8a9eba
      ΔE = 4.924 / LRV ≈ 33.4%
  71. Behr

    1. 8502 French Violet
      ‎#8a9dc1
      ΔE = 4.677 / LRV ≈ 33.4%
    2. Augusta PPOC-63
      ‎#849cb6
      ΔE = 4.892 / LRV ≈ 32.1%
  72. Bristol

    1. Violet Aura / P102-C5
      ‎#838b9d
      ΔE = 4.712 / LRV ≈ 25.7%
    2. Violet Verbena / P101-C5
      ‎#8c8ca0
      ΔE = 4.854 / LRV ≈ 26.9%
  73. Crayola

    1. Manatee
      ‎#8d90a1
      ΔE = 4.849 / LRV ≈ 28.2%
  74. Mylands of London

    1. Wedgewood
      ‎#879ebe
      ΔE = 4.873 / LRV ≈ 33.3%
  75. Ralph Lauren

    1. Big Sur Blue / RLIB223
      ‎#718cb7
      ΔE = 4.908 / LRV ≈ 25.7%
  76. Berger

    1. Postcard Perfect / 7295
      ‎#6e91b3
      ΔE = 4.911 / LRV ≈ 26.8%
    2. South Port / 7271
      ‎#7d98c4
      ΔE = 4.958 / LRV ≈ 30.8%
  77. Toyo Ink

    1. CF10713
      ‎#8b89a2
      ΔE = 4.937 / LRV ≈ 26.0%
  78. Crown Paint

    1. Pencil Skirt Grey
      ‎#8e97a8
      ΔE = 5.002 / LRV ≈ 30.7%
  79. Martha Stewart Living

    1. June Iris B10
      ‎#8b9db5
      ΔE = 5.017 / LRV ≈ 32.9%
  80. Disney

    1. P5-2 Eeyore's Blues
      ‎#879eba
      ΔE = 5.098 / LRV ≈ 33.1%
  81. Sherwin-Williams

    1. Lobelia - 6809
      ‎#7498be
      ΔE = 5.112 / LRV ≈ 29.9%
    2. Bluesy Note - 9064
      ‎#7c9ab5
      ΔE = 5.199 / LRV ≈ 30.7%
  82. Dupont

    1. CAS940
      ‎#8093a5
      ΔE = 5.123 / LRV ≈ 28.2%
  83. Liebherr

    1. Blaugrau / 075421
      ‎#778ca1
      ΔE = 5.184 / LRV ≈ 25.3%

محاكاة عمى اللون

Monochromacy

Dichromacy

رؤية ثلاثية الألوان

‎#8391b0 HTML / CSS أمثلة على الرمز

‎#8391b0 الصدارة

من الحب ما قتل.

<p style="color: #8391b0">…</p>

‎#8391b0 الخلفية

أباد الله خضراءهم.

<p style="background-color: #8391b0">…</p>

‎#8391b0 ظل النص

أقبح من الغول.

<p style="text-shadow: 0.1em 0.1em 0.15em #8391b0">…</p>

الرسوم البيانية للون

تحويلات مساحة اللون

عشري
8622512
الثنائية
10000011, 10010001, 10110000
عشري
#8391b0
LRV
≈ 28.2%
أقرب لون ست عشري قصير
#89b ΔE = 3.086
RGB
rgb(131, 145, 176)
RGBA
rgba(131, 145, 176, 1.0)
rg اللونية
r: 0.290, g: 0.321, b: 0.389
RYB
أحمر: 51.373%, أصفر: 55.560%, أزرق: 69.020%
Android / android.graphics.Color
-8154704 / 0xff8391b0
HSL
hsl(221, 22%, 60%)
HSLA
hsla(221, 22%, 60%, 1.0)
HSV / HSB
صبغة: 221° (221.333), تشبع: 26% (0.256), قيمة: 69% (0.690)
HSP
صبغة: 221.333, تشبع: 25.568%, السطوع المدركة: 56.834%
HSLuv (HUSL)
H: 252.098, S: 27.042, L: 60.078
Cubehelix
H: -140.632, S: 0.275, L: 0.566
TSL
T: -2.158, S: 0.061, L: 0.566
CMYK
سيان: 26% (0.256), ماجنتي: 18% (0.176), أصفر: 0% (0.000), أسود: 31% (0.310)
CMY
سيان: 49% (0.486), ماجنتي: 43% (0.431), أصفر: 31% (0.310)
XYZ
X: 27.320, Y: 28.210, Z: 45.072
xyY
x: 0.272, y: 0.280, Y: 28.210
CIELab
L: 60.078, a: 2.055, b: -17.885
CIELuv
L: 60.078, u: -8.791, v: -27.214
CIELCH / LCHab
L: 60.078, C: 18.003, H: 276.553
CIELUV / LCHuv
L: 60.078, C: 28.598, H: 252.098
Hunter-Lab
L: 53.113, a: -1.132, b: -13.134
CIECAM02
J: 49.760, C: 24.303, h: 258.280, Q: 138.979, M: 21.252, s: 39.105, H: 310.194
OSA-UCS
خفة: -10.177, أصفر: -3.139, أخضر: 0.624
LMS
L: 24.819, M: 28.939, S: 44.789
YCbCr
Y: 139.995, Cb: 143.681, Cr: 119.653
YCoCg
Y: 149.250, Cg: -4.250, Co: 21.500
YDbDr
Y: 144.348, Db: 47.623, Dr: 25.389
YPbPr
Y: 144.250, Pb: 17.110, Pr: -8.426
xvYCC
Y: 139.885, Cb: 143.030, Cr: 120.598
YIQ
Y: 144.348, I: -18.299, Q: 6.685
YUV
Y: 144.348, U: 15.577, V: -11.710
نظام الألوان مونسل
7.5PB 6/6 ΔE = 4.680
لون العلامة التجارية
Dropbox ΔE = 9.797

ألوان عشوائية

أحمر

أخضر

أزرق