#181C72#181C72

#181C72 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.5% C 0.143 H 271.5°. Best body text is #FFFFFF at 14.50:1 contrast (WCAG AA passes).

Color values

HEX	#181C72
RGB	rgb(24, 28, 114)
HSL	hsl(237, 65%, 27%)
HSV	hsv(237, 79%, 45%)
CMYK	cmyk(78.9%, 75.4%, 0%, 55.3%)
CIE-LAB	lab(16.70, 30.46, -49.49)
CIE-LCH	lch(16.70, 58.11, 301.61°)
OKLab	oklab(29.46% 0.0038 -0.1432)
OKLCH	oklch(29.46% 0.143 271.5)
XYZ	xyz(3.8282, 2.2392, 16.1468)
Luminance	0.0224 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C72 #726E18

analogous

#184972 #181C72 #411872

triadic

#181C72 #72181C #1C7218

tetradic

#181C72 #721849 #726E18 #187241

square

#181C72 #721849 #726E18 #187241

split-complementary

#181C72 #724118 #497218

monochromatic

#050619 #0D103F #181C72 #2328A5 #3138D4

Accessibility & contrast

On white

14.50

#181C72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#181C72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C72

14.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C72	#FFFFFF	#000000	##FFFFFF
##181C72	1.00	14.50	1.45	14.50
#FFFFFF	14.50	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E75

Deuteranopia (green-blind)

#002570

Tritanopia (blue-blind)

#003445

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #181c72;
/* rgb */ color: rgb(24, 28, 114);
/* oklch */ color: oklch(29.5% 0.143 271.5);

Tailwind

colors: {
  custom: {
    50: '#66599c',
    500: '#181c72',
    950: '#000000',
  },
}

SCSS

$custom: #181c72;
$custom-light: #66599c;
$custom-dark: #000000;

JSON

{
  "hex": "#181c72",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 114
  },
  "hsl": {
    "h": 237.333,
    "s": 65.217,
    "l": 27.059
  },
  "oklch": {
    "l": 0.29459,
    "c": 0.1433,
    "h": 271.5
  },
  "luminance": 0.0224
}

Semantic roles & 50–950 ramp

primary

#181C72

secondary

#A7A33E

accent

#E140E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #181C72

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

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