#181F44#181F44

#181F44 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.5% C 0.070 H 272.5°. Best body text is #FFFFFF at 15.93:1 contrast (WCAG AA passes).

Color values

HEX	#181F44
RGB	rgb(24, 31, 68)
HSL	hsl(230, 48%, 18%)
HSV	hsv(230, 65%, 27%)
CMYK	cmyk(64.7%, 54.4%, 0%, 73.3%)
CIE-LAB	lab(13.18, 10.16, -24.40)
CIE-LCH	lch(13.18, 26.43, 292.61°)
OKLab	oklab(25.54% 0.003 -0.0697)
OKLCH	oklch(25.54% 0.07 272.5)
XYZ	xyz(1.9097, 1.5914, 5.6743)
Luminance	0.0159 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F44 #443D18

analogous

#183544 #181F44 #271844

triadic

#181F44 #44181F #1F4418

tetradic

#181F44 #441835 #443D18 #184427

square

#181F44 #441835 #443D18 #184427

split-complementary

#181F44 #442718 #354418

monochromatic

#080A17 #080A17 #181F44 #283471 #38489E

Accessibility & contrast

On white

15.93

#181F44 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#181F44 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F44

15.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F44	#FFFFFF	#000000	##FFFFFF
##181F44	1.00	15.93	1.32	15.93
#FFFFFF	15.93	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D2445

Deuteranopia (green-blind)

#062043

Tritanopia (blue-blind)

#00272E

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #181f44;
/* rgb */ color: rgb(24, 31, 68);
/* oklch */ color: oklch(25.5% 0.070 272.5);

Tailwind

colors: {
  custom: {
    50: '#5a5a78',
    500: '#181f44',
    950: '#000000',
  },
}

SCSS

$custom: #181f44;
$custom-light: #5a5a78;
$custom-dark: #000000;

JSON

{
  "hex": "#181f44",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 68
  },
  "hsl": {
    "h": 230.455,
    "s": 47.826,
    "l": 18.039
  },
  "oklch": {
    "l": 0.25535,
    "c": 0.06974,
    "h": 272.5
  },
  "luminance": 0.01592
}

Semantic roles & 50–950 ramp

primary

#181F44

secondary

#7B713D

accent

#C250D7

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040309

muted

#79787B

Preview Lab

Preview with #181F44

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

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