#181F6F#181F6F

#181F6F is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.6% C 0.136 H 271.1°. Best body text is #FFFFFF at 14.34:1 contrast (WCAG AA passes).

Color values

HEX	#181F6F
RGB	rgb(24, 31, 111)
HSL	hsl(235, 64%, 26%)
HSV	hsv(235, 78%, 44%)
CMYK	cmyk(78.4%, 72.1%, 0%, 56.5%)
CIE-LAB	lab(17.09, 27.35, -46.89)
CIE-LCH	lch(17.09, 54.29, 300.25°)
OKLab	oklab(29.65% 0.0026 -0.1357)
OKLCH	oklch(29.65% 0.136 271.1)
XYZ	xyz(3.7349, 2.3215, 15.2871)
Luminance	0.0232 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F6F #6F6818

analogous

#184B6F #181F6F #3D186F

triadic

#181F6F #6F181F #1F6F18

tetradic

#181F6F #6F184B #6F6818 #186F3D

square

#181F6F #6F184B #6F6818 #186F3D

split-complementary

#181F6F #6F3D18 #4B6F18

monochromatic

#050719 #0D113D #181F6F #232DA1 #2F3CD2

Accessibility & contrast

On white

14.34

#181F6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#181F6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F6F

14.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F6F	#FFFFFF	#000000	##FFFFFF
##181F6F	1.00	14.34	1.46	14.34
#FFFFFF	14.34	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E71

Deuteranopia (green-blind)

#00266E

Tritanopia (blue-blind)

#003544

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #181f6f;
/* rgb */ color: rgb(24, 31, 111);
/* oklch */ color: oklch(29.6% 0.136 271.1);

Tailwind

colors: {
  custom: {
    50: '#655b99',
    500: '#181f6f',
    950: '#000000',
  },
}

SCSS

$custom: #181f6f;
$custom-light: #655b99;
$custom-dark: #000000;

JSON

{
  "hex": "#181f6f",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 111
  },
  "hsl": {
    "h": 235.172,
    "s": 64.444,
    "l": 26.471
  },
  "oklch": {
    "l": 0.29647,
    "c": 0.13571,
    "h": 271.1
  },
  "luminance": 0.02322
}

Semantic roles & 50–950 ramp

primary

#181F6F

secondary

#A59C3E

accent

#DA40E7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040E

muted

#7A797E

Preview Lab

Preview with #181F6F

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

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