#181F41#181F41

#181F41 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.3% C 0.065 H 272.3°. Best body text is #FFFFFF at 16.02:1 contrast (WCAG AA passes).

Color values

HEX	#181F41
RGB	rgb(24, 31, 65)
HSL	hsl(230, 46%, 17%)
HSV	hsv(230, 63%, 25%)
CMYK	cmyk(63.1%, 52.3%, 0%, 74.5%)
CIE-LAB	lab(12.96, 8.96, -22.65)
CIE-LCH	lch(12.96, 24.36, 291.58°)
OKLab	oklab(25.3% 0.0026 -0.0645)
OKLCH	oklch(25.3% 0.065 272.3)
XYZ	xyz(1.8205, 1.5557, 5.2043)
Luminance	0.0156 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F41 #413A18

analogous

#183441 #181F41 #261841

triadic

#181F41 #41181F #1F4118

tetradic

#181F41 #411834 #413A18 #184126

square

#181F41 #411834 #413A18 #184126

split-complementary

#181F41 #412618 #344118

monochromatic

#080B16 #080B16 #181F41 #29346E #394A9A

Accessibility & contrast

On white

16.02

#181F41 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#181F41 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F41

16.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F41	#FFFFFF	#000000	##FFFFFF
##181F41	1.00	16.02	1.31	16.02
#FFFFFF	16.02	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#102342

Deuteranopia (green-blind)

#0A2040

Tritanopia (blue-blind)

#03272C

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #181f41;
/* rgb */ color: rgb(24, 31, 65);
/* oklch */ color: oklch(25.3% 0.065 272.3);

Tailwind

colors: {
  custom: {
    50: '#595a76',
    500: '#181f41',
    950: '#000000',
  },
}

SCSS

$custom: #181f41;
$custom-light: #595a76;
$custom-dark: #000000;

JSON

{
  "hex": "#181f41",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 65
  },
  "hsl": {
    "h": 229.756,
    "s": 46.067,
    "l": 17.451
  },
  "oklch": {
    "l": 0.25297,
    "c": 0.0646,
    "h": 272.3
  },
  "luminance": 0.01556
}

Semantic roles & 50–950 ramp

primary

#181F41

secondary

#786E3D

accent

#BF52D6

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040308

muted

#79787B

Preview Lab

Preview with #181F41

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

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