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#181B4E

#181b4e ≈ Oxford Blue

  • blue
  • Lightness: low
  • Saturation: muted
  • Cool
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#181b4e is a color from the blue family, with low lightness and muted saturation. In the RGB model it is made of 9.41% red, 10.59% green and 30.59% blue; printed in CMYK it uses 69.23% cyan, 65.38% magenta, 0% yellow and 69.41% black. Its hue angle is 236.67°, with 52.94% saturation and 20% lightness in HSL. It is a cool color, often associated with trust, stability and focus. Designers typically use it for technology products, finance and banking and luxury branding. White text on this color reaches a contrast ratio of 16.08:1 (WCAG AAA). The closest named color is Oxford Blue (#002147), ΔE 6.39.

Description generated from the measured properties of this color.

HEX
RGB
RGB percent
CMY
CMYK
HSL
HSV / HSB
Web safe#003366
CIE-LAB
XYZ
xyY
CIE-LCH
CIE-LUV
Hunter-Lab
OKLab
Binary
Decimal
Relative luminance0.0153

Complementary

  1. #181b4e
  2. #4e4b18

Split complementary

  1. #181b4e
  2. #4e3018
  3. #364e18

Analogous

  1. #18364e
  2. #181b4e
  3. #30184e

Triadic

  1. #181b4e
  2. #4e181b
  3. #1b4e18

Tetradic

  1. #181b4e
  2. #4b184e
  3. #4e4b18
  4. #1b4e18

Square

  1. #181b4e
  2. #4e1836
  3. #4e4b18
  4. #184e30

Monochromatic

  1. #050510
  2. #060713
  3. #181b4e
  4. #2a2f88
  5. #3c43c3

Shades

#181b4e mixed progressively with black.

  1. #181b4e
  2. #161846
  3. #13163e
  4. #111337
  5. #0e102f
  6. #0c0e27
  7. #0a0b1f
  8. #070817
  9. #050510
  10. #020308
  11. #000000

Tints

#181b4e mixed progressively with white.

  1. #181b4e
  2. #2f3260
  3. #464971
  4. #5d5f83
  5. #747695
  6. #8c8da7
  7. #a3a4b8
  8. #babbca
  9. #d1d1dc
  10. #e8e8ed
  11. #ffffff

Tones

#181b4e mixed progressively with gray.

  1. #181b4e
  2. #222553
  3. #2d2f58
  4. #37395d
  5. #424362
  6. #4c4e67
  7. #56586c
  8. #616271
  9. #6b6c76
  10. #76767b
  11. #808080

Readable text 16.08:1 AA ✓ AA Large ✓ AAA ✓ AAA Large ✓
Readable text 1.31:1 AA ✕ AA Large ✕ AAA ✕ AAA Large ✕

Achromatopsia #212121 ≈ 0.003% of males
Achromatomaly #1e1f38 ≈ 0.001% of males
Protanopia #002450 ≈ 1.01% of males
Deuteranopia #001f4d ≈ 1.27% of males
Tritanopia #002731 ≈ 0.0001% of males
Protanomaly #07204f ≈ 1.08% of males
Deuteranomaly #031d4d ≈ 4.63% of males
Tritanomaly #06233f ≈ 0.0002% of males
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Text in this color

Background in this color

Border in this color

Text color
.text-181b4e {
  color: #181b4e;
}
Background
.bg-181b4e {
  background-color: #181b4e;
  color: #ffffff;
}
Border
.border-181b4e {
  border: 2px solid #181b4e;
}
CSS variables
:root {
  --color-primary: #181b4e;
  --color-primary-rgb: 24 27 78;
  --color-primary-hsl: 237 53% 20%;
}
Gradient
.gradient-181b4e {
  background: linear-gradient(135deg, #181b4e, #30184e);
}
Colored shadow
.shadow-181b4e {
  box-shadow: 0 8px 24px rgb(24 27 78 / 0.35);
}

#002147 Oxford Blue ΔE 6.39 #191970 Midnight Blue ΔE 7.01 #32127a Persian Indigo ΔE 10.09 #000f89 Phthalo Blue ΔE 11.35 #003153 Prussian Blue ΔE 11.37 #000080 Navy ΔE 11.63 #002395 Imperial Blue ΔE 11.88 #e7e4b1 Inverted #212121 Grayscale 

Oxford Blue
#181b4e  rgb(24, 27, 78)  hsl(237, 53%, 20%)  Oxford Blue
#4e4b18  rgb(78, 75, 24)  hsl(57, 53%, 20%)  Army Green
#4e181b  rgb(78, 24, 27)  hsl(357, 53%, 20%)  Caput Mortuum
#1b4e18  rgb(27, 78, 24)  hsl(117, 53%, 20%)  Lincoln Green