#181F72#181F72

#181F72 is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.0% C 0.140 H 270.9°. Best body text is #FFFFFF at 14.21:1 contrast (WCAG AA passes).

Color values

HEX	#181F72
RGB	rgb(24, 31, 114)
HSL	hsl(235, 65%, 27%)
HSV	hsv(235, 79%, 45%)
CMYK	cmyk(78.9%, 72.8%, 0%, 55.3%)
CIE-LAB	lab(17.41, 28.50, -48.32)
CIE-LCH	lch(17.41, 56.10, 300.54°)
OKLab	oklab(29.97% 0.0022 -0.1398)
OKLCH	oklch(29.97% 0.14 270.9)
XYZ	xyz(3.9029, 2.3886, 16.1717)
Luminance	0.0239 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F72 #726B18

analogous

#184C72 #181F72 #3E1872

triadic

#181F72 #72181F #1F7218

tetradic

#181F72 #72184C #726B18 #18723E

square

#181F72 #72184C #726B18 #18723E

split-complementary

#181F72 #723E18 #4C7218

monochromatic

#050719 #0D113F #181F72 #232DA5 #313DD4

Accessibility & contrast

On white

14.21

#181F72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#181F72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F72

14.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F72	#FFFFFF	#000000	##FFFFFF
##181F72	1.00	14.21	1.48	14.21
#FFFFFF	14.21	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F75

Deuteranopia (green-blind)

#002670

Tritanopia (blue-blind)

#003646

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #181f72;
/* rgb */ color: rgb(24, 31, 114);
/* oklch */ color: oklch(30.0% 0.140 270.9);

Tailwind

colors: {
  custom: {
    50: '#655b9b',
    500: '#181f72',
    950: '#000000',
  },
}

SCSS

$custom: #181f72;
$custom-light: #655b9b;
$custom-dark: #000000;

JSON

{
  "hex": "#181f72",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 114
  },
  "hsl": {
    "h": 235.333,
    "s": 65.217,
    "l": 27.059
  },
  "oklch": {
    "l": 0.29971,
    "c": 0.13986,
    "h": 270.9
  },
  "luminance": 0.02389
}

Semantic roles & 50–950 ramp

primary

#181F72

secondary

#A79F3E

accent

#DB40E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #181F72

Body copy rendered with the generated semantic roles for this colour.

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