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#2178CB

#2178cb ≈ True Blue

  • azure
  • Lightness: medium
  • Saturation: strong
  • Cool
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#2178cb is a color from the azure family, with medium lightness and strong saturation. In the RGB model it is made of 12.94% red, 47.06% green and 79.61% blue; printed in CMYK it uses 83.74% cyan, 40.89% magenta, 0% yellow and 20.39% black. Its hue angle is 209.29°, with 72.03% saturation and 46.27% lightness in HSL. It is a cool color, often associated with openness, freedom and calm. Designers typically use it for technology products, finance and banking and brand accents. Black text on this color reaches a contrast ratio of 4.61:1 (WCAG AA). The closest named color is True Blue (#0073cf), ΔE 1.83.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#3366cc
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.1807

Complementary

  1. #2178cb
  2. #cb7421

Split complementary

  1. #2178cb
  2. #cb2123
  3. #cbc921

Analogous

  1. #21cbc9
  2. #2178cb
  3. #2123cb

Triadic

  1. #2178cb
  2. #cb2178
  3. #78cb21

Tetradic

  1. #2178cb
  2. #7421cb
  3. #cb7421
  4. #78cb21

Square

  1. #2178cb
  2. #c921cb
  3. #cb7421
  4. #23cb21

Monochromatic

  1. #0c2a47
  2. #165189
  3. #2178cb
  4. #559ee3
  5. #97c4ee

Shades

#2178cb mixed progressively with black.

  1. #2178cb
  2. #1e6cb7
  3. #1a60a2
  4. #17548e
  5. #14487a
  6. #113c66
  7. #0d3051
  8. #0a243d
  9. #071829
  10. #030c14
  11. #000000

Tints

#2178cb mixed progressively with white.

  1. #2178cb
  2. #3786d0
  3. #4d93d5
  4. #64a1db
  5. #7aaee0
  6. #90bce5
  7. #a6c9ea
  8. #bcd7ef
  9. #d3e4f5
  10. #e9f2fa
  11. #ffffff

Tones

#2178cb mixed progressively with gray.

  1. #2178cb
  2. #2b79c4
  3. #347abc
  4. #3e7ab5
  5. #477bad
  6. #517ca6
  7. #5a7d9e
  8. #647e97
  9. #6d7e8f
  10. #777f88
  11. #808080

Readable text 4.55:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓
Readable text 4.61:1 AA ✓ AA Large ✓ AAA ✕ AAA Large ✓

Achromatopsia #767676 ≈ 0.003% of males
Achromatomaly #5f779f ≈ 0.001% of males
Protanopia #4f7ece ≈ 1.01% of males
Deuteranopia #316fc9 ≈ 1.27% of males
Tritanopia #008c97 ≈ 0.0001% of males
Protanomaly #417ccd ≈ 1.08% of males
Deuteranomaly #2c73ca ≈ 4.63% of males
Tritanomaly #0084ae ≈ 0.0002% of males
Simulate on your own image

Text in this color

Background in this color

Border in this color

Text color
.text-2178cb {
  color: #2178cb;
}
Background
.bg-2178cb {
  background-color: #2178cb;
  color: #000000;
}
Border
.border-2178cb {
  border: 2px solid #2178cb;
}
CSS variables
:root {
  --color-primary: #2178cb;
  --color-primary-rgb: 33 120 203;
  --color-primary-hsl: 209 72% 46%;
}
Gradient
.gradient-2178cb {
  background: linear-gradient(135deg, #2178cb, #2123cb);
}
Colored shadow
.shadow-2178cb {
  box-shadow: 0 8px 24px rgb(33 120 203 / 0.35);
}

#0073cf True Blue ΔE 1.83 #417dc1 Tufts Blue ΔE 2.61 #0072bb French Blue ΔE 3.52 #4682b4 Steel Blue ΔE 4.69 #0070ff Brandeis Blue ΔE 6.96 #6082b6 Glaucous ΔE 7.44 #318ce7 Bleu de France ΔE 7.57 #de8734 Inverted #767676 Grayscale 

True Blue
#2178cb  rgb(33, 120, 203)  hsl(209, 72%, 46%)  True Blue
#cb7421  rgb(203, 116, 33)  hsl(29, 72%, 46%)  Ochre
#cb2178  rgb(203, 33, 120)  hsl(329, 72%, 46%)  Telemagenta
#78cb21  rgb(120, 203, 33)  hsl(89, 72%, 46%)  Yellow Green