#181B73#181B73

#181B73 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.4% C 0.146 H 271.6°. Best body text is #FFFFFF at 14.55:1 contrast (WCAG AA passes).

Color values

HEX	#181B73
RGB	rgb(24, 27, 115)
HSL	hsl(238, 65%, 27%)
HSV	hsv(238, 79%, 45%)
CMYK	cmyk(79.1%, 76.5%, 0%, 54.9%)
CIE-LAB	lab(16.58, 31.47, -50.33)
CIE-LCH	lch(16.58, 59.36, 302.02°)
OKLab	oklab(29.41% 0.0042 -0.1457)
OKLCH	oklch(29.41% 0.146 271.6)
XYZ	xyz(3.8621, 2.2154, 16.4404)
Luminance	0.0222 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B73 #737018

analogous

#184973 #181B73 #431873

triadic

#181B73 #73181B #1B7318

tetradic

#181B73 #731849 #737018 #187343

square

#181B73 #731849 #737018 #187343

split-complementary

#181B73 #734318 #497318

monochromatic

#050619 #0D0F40 #181B73 #2327A6 #3137D4

Accessibility & contrast

On white

14.55

#181B73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#181B73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B73

14.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B73	#FFFFFF	#000000	##FFFFFF
##181B73	1.00	14.55	1.44	14.55
#FFFFFF	14.55	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D76

Deuteranopia (green-blind)

#002471

Tritanopia (blue-blind)

#003445

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #181b73;
/* rgb */ color: rgb(24, 27, 115);
/* oklch */ color: oklch(29.4% 0.146 271.6);

Tailwind

colors: {
  custom: {
    50: '#66589c',
    500: '#181b73',
    950: '#000000',
  },
}

SCSS

$custom: #181b73;
$custom-light: #66589c;
$custom-dark: #000000;

JSON

{
  "hex": "#181b73",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 115
  },
  "hsl": {
    "h": 238.022,
    "s": 65.468,
    "l": 27.255
  },
  "oklch": {
    "l": 0.2941,
    "c": 0.14575,
    "h": 271.6
  },
  "luminance": 0.02216
}

Semantic roles & 50–950 ramp

primary

#181B73

secondary

#A8A53F

accent

#E33FE8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #181B73

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

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