#181F49#181F49

#181F49 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 25.9% C 0.078 H 272.7°. Best body text is #FFFFFF at 15.78:1 contrast (WCAG AA passes).

Color values

HEX	#181F49
RGB	rgb(24, 31, 73)
HSL	hsl(231, 51%, 19%)
HSV	hsv(231, 67%, 29%)
CMYK	cmyk(67.1%, 57.5%, 0%, 71.4%)
CIE-LAB	lab(13.56, 12.19, -27.25)
CIE-LCH	lch(13.56, 29.85, 294.10°)
OKLab	oklab(25.95% 0.0036 -0.078)
OKLCH	oklch(25.95% 0.078 272.7)
XYZ	xyz(2.0689, 1.6550, 6.5125)
Luminance	0.0165 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F49 #494218

analogous

#183849 #181F49 #2A1849

triadic

#181F49 #49181F #1F4918

tetradic

#181F49 #491838 #494218 #18492A

square

#181F49 #491838 #494218 #18492A

split-complementary

#181F49 #492A18 #384918

monochromatic

#080A17 #090B1B #181F49 #273377 #3646A5

Accessibility & contrast

On white

15.78

#181F49 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#181F49 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F49

15.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F49	#FFFFFF	#000000	##FFFFFF
##181F49	1.00	15.78	1.33	15.78
#FFFFFF	15.78	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#07254A

Deuteranopia (green-blind)

#002148

Tritanopia (blue-blind)

#002930

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #181f49;
/* rgb */ color: rgb(24, 31, 73);
/* oklch */ color: oklch(25.9% 0.078 272.7);

Tailwind

colors: {
  custom: {
    50: '#5b5a7c',
    500: '#181f49',
    950: '#000000',
  },
}

SCSS

$custom: #181f49;
$custom-light: #5b5a7c;
$custom-dark: #000000;

JSON

{
  "hex": "#181f49",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 73
  },
  "hsl": {
    "h": 231.429,
    "s": 50.515,
    "l": 19.02
  },
  "oklch": {
    "l": 0.25949,
    "c": 0.07813,
    "h": 272.7
  },
  "luminance": 0.01655
}

Semantic roles & 50–950 ramp

primary

#181F49

secondary

#80763D

accent

#C64EDA

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#040309

muted

#79787B

Preview Lab

Preview with #181F49

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

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