#181D72#181D72

#181D72 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.6% C 0.142 H 271.3°. Best body text is #FFFFFF at 14.41:1 contrast (WCAG AA passes).

Color values

HEX	#181D72
RGB	rgb(24, 29, 114)
HSL	hsl(237, 65%, 27%)
HSV	hsv(237, 79%, 45%)
CMYK	cmyk(78.9%, 74.6%, 0%, 55.3%)
CIE-LAB	lab(16.93, 29.82, -49.11)
CIE-LCH	lch(16.93, 57.45, 301.27°)
OKLab	oklab(29.63% 0.0033 -0.1421)
OKLCH	oklch(29.63% 0.142 271.3)
XYZ	xyz(3.8523, 2.2874, 16.1548)
Luminance	0.0229 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D72 #726D18

analogous

#184A72 #181D72 #401872

triadic

#181D72 #72181D #1D7218

tetradic

#181D72 #72184A #726D18 #187240

square

#181D72 #72184A #726D18 #187240

split-complementary

#181D72 #724018 #4A7218

monochromatic

#050619 #0D103F #181D72 #232AA5 #313AD4

Accessibility & contrast

On white

14.41

#181D72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#181D72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D72

14.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D72	#FFFFFF	#000000	##FFFFFF
##181D72	1.00	14.41	1.46	14.41
#FFFFFF	14.41	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E75

Deuteranopia (green-blind)

#002570

Tritanopia (blue-blind)

#003545

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #181d72;
/* rgb */ color: rgb(24, 29, 114);
/* oklch */ color: oklch(29.6% 0.142 271.3);

Tailwind

colors: {
  custom: {
    50: '#66599c',
    500: '#181d72',
    950: '#000000',
  },
}

SCSS

$custom: #181d72;
$custom-light: #66599c;
$custom-dark: #000000;

JSON

{
  "hex": "#181d72",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 114
  },
  "hsl": {
    "h": 236.667,
    "s": 65.217,
    "l": 27.059
  },
  "oklch": {
    "l": 0.29626,
    "c": 0.14218,
    "h": 271.3
  },
  "luminance": 0.02288
}

Semantic roles & 50–950 ramp

primary

#181D72

secondary

#A7A23E

accent

#DF40E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #181D72

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

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