#181F90#181F90

#181F90 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.4% C 0.179 H 269.2°. Best body text is #FFFFFF at 12.82:1 contrast (WCAG AA passes).

Color values

HEX	#181F90
RGB	rgb(24, 31, 144)
HSL	hsl(237, 71%, 33%)
HSV	hsv(237, 83%, 56%)
CMYK	cmyk(83.3%, 78.5%, 0%, 43.5%)
CIE-LAB	lab(20.78, 39.44, -61.75)
CIE-LCH	lch(20.78, 73.27, 302.56°)
OKLab	oklab(33.38% -0.0024 -0.1789)
OKLCH	oklch(33.38% 0.179 269.2)
XYZ	xyz(5.8990, 3.1871, 26.6844)
Luminance	0.0319 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F90 #908918

analogous

#185B90 #181F90 #4D1890

triadic

#181F90 #90181F #1F9018

tetradic

#181F90 #90185B #908918 #18904D

square

#181F90 #90185B #908918 #18904D

split-complementary

#181F90 #904D18 #5B9018

monochromatic

#070827 #0F145C #181F90 #212AC4 #434CE0

Accessibility & contrast

On white

12.82

#181F90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#181F90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F90

12.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F90	#FFFFFF	#000000	##FFFFFF
##181F90	1.00	12.82	1.64	12.82
#FFFFFF	12.82	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003893

Deuteranopia (green-blind)

#002C8E

Tritanopia (blue-blind)

#004157

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #181f90;
/* rgb */ color: rgb(24, 31, 144);
/* oklch */ color: oklch(33.4% 0.179 269.2);

Tailwind

colors: {
  custom: {
    50: '#6e5cb2',
    500: '#181f90',
    950: '#000000',
  },
}

SCSS

$custom: #181f90;
$custom-light: #6e5cb2;
$custom-dark: #000000;

JSON

{
  "hex": "#181f90",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 144
  },
  "hsl": {
    "h": 236.5,
    "s": 71.429,
    "l": 32.941
  },
  "oklch": {
    "l": 0.33375,
    "c": 0.17892,
    "h": 269.2
  },
  "luminance": 0.03188
}

Semantic roles & 50–950 ramp

primary

#181F90

secondary

#C0B943

accent

#E43AEE

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #181F90

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

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