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#181F28

#181f28 ≈ Rich Black

  • azure
  • Lightness: very low
  • Saturation: muted
  • Cool
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#181f28 is a color from the azure family, with very low lightness and muted saturation. In the RGB model it is made of 9.41% red, 12.16% green and 15.69% blue; printed in CMYK it uses 40% cyan, 22.5% magenta, 0% yellow and 84.31% black. Its hue angle is 213.75°, with 25% saturation and 12.55% 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 corporate identities. White text on this color reaches a contrast ratio of 16.59:1 (WCAG AAA). The closest named color is Rich Black (#010b13), ΔE 5.77.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#003333
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.0133

Complementary

  1. #181f28
  2. #282118

Split complementary

  1. #181f28
  2. #281918
  3. #272818

Analogous

  1. #182728
  2. #181f28
  3. #191828

Triadic

  1. #181f28
  2. #28181f
  3. #1f2818

Tetradic

  1. #181f28
  2. #211828
  3. #282118
  4. #1f2818

Square

  1. #181f28
  2. #281827
  3. #282118
  4. #182819

Monochromatic

  1. #080a0d
  2. #080a0d
  3. #181f28
  4. #354458
  5. #516988

Shades

#181f28 mixed progressively with black.

  1. #181f28
  2. #161c24
  3. #131920
  4. #11161c
  5. #0e1318
  6. #0c1014
  7. #0a0c10
  8. #07090c
  9. #050608
  10. #020304
  11. #000000

Tints

#181f28 mixed progressively with white.

  1. #181f28
  2. #2f353e
  3. #464c53
  4. #5d6269
  5. #74797e
  6. #8c8f94
  7. #a3a5a9
  8. #babcbf
  9. #d1d2d4
  10. #e8e9ea
  11. #ffffff

Tones

#181f28 mixed progressively with gray.

  1. #181f28
  2. #222931
  3. #2d323a
  4. #373c42
  5. #42464b
  6. #4c5054
  7. #56595d
  8. #616366
  9. #6b6d6e
  10. #767677
  11. #808080

Readable text 16.59:1 AA ✓ AA Large ✓ AAA ✓ AAA Large ✓
Readable text 1.27:1 AA ✕ AA Large ✕ AAA ✕ AAA Large ✕

Achromatopsia #1e1e1e ≈ 0.003% of males
Achromatomaly #1c1f23 ≈ 0.001% of males
Protanopia #1c1f28 ≈ 1.01% of males
Deuteranopia #1a1e28 ≈ 1.27% of males
Tritanopia #132122 ≈ 0.0001% of males
Protanomaly #1a1f28 ≈ 1.08% of males
Deuteranomaly #191e28 ≈ 4.63% of males
Tritanomaly #152024 ≈ 0.0002% of males
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Text in this color

Background in this color

Border in this color

Text color
.text-181f28 {
  color: #181f28;
}
Background
.bg-181f28 {
  background-color: #181f28;
  color: #ffffff;
}
Border
.border-181f28 {
  border: 2px solid #181f28;
}
CSS variables
:root {
  --color-primary: #181f28;
  --color-primary-rgb: 24 31 40;
  --color-primary-hsl: 214 25% 13%;
}
Gradient
.gradient-181f28 {
  background: linear-gradient(135deg, #181f28, #191828);
}
Colored shadow
.shadow-181f28 {
  box-shadow: 0 8px 24px rgb(24 31 40 / 0.35);
}

#010b13 Rich Black ΔE 5.77 #2a3439 Gunmetal ΔE 7.44 #343434 Jet ΔE 9.19 #000000 Black ΔE 9.24 #353839 Onyx ΔE 9.50 #100c08 Smoky Black ΔE 9.53 #1a1110 Licorice ΔE 10.57 #e7e0d7 Inverted #1e1e1e Grayscale 

Rich Black
#181f28  rgb(24, 31, 40)  hsl(214, 25%, 13%)  Rich Black
#282118  rgb(40, 33, 24)  hsl(34, 25%, 13%)  Bistre
#28181f  rgb(40, 24, 31)  hsl(334, 25%, 13%)  Licorice
#1f2818  rgb(31, 40, 24)  hsl(94, 25%, 13%)  Phthalo Green