#181F38#181F38

#181F38 is a very dark, muted blue. Relative luminance 0.015; OKLCH L 24.6% C 0.049 H 270.7°. Best body text is #FFFFFF at 16.25:1 contrast (WCAG AA passes).

Color values

HEX	#181F38
RGB	rgb(24, 31, 56)
HSL	hsl(227, 40%, 16%)
HSV	hsv(227, 57%, 22%)
CMYK	cmyk(57.1%, 44.6%, 0%, 78%)
CIE-LAB	lab(12.35, 5.42, -17.27)
CIE-LCH	lch(12.35, 18.10, 287.43°)
OKLab	oklab(24.63% 0.0006 -0.0488)
OKLCH	oklch(24.63% 0.049 270.7)
XYZ	xyz(1.5803, 1.4596, 3.9391)
Luminance	0.0146 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F38 #383118

analogous

#182F38 #181F38 #211838

triadic

#181F38 #38181F #1F3818

tetradic

#181F38 #38182F #383118 #183821

square

#181F38 #38182F #383118 #183821

split-complementary

#181F38 #382118 #2F3818

monochromatic

#090C15 #090C15 #181F38 #2A3763 #3D4E8E

Accessibility & contrast

On white

16.25

#181F38 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#181F38 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F38

16.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F38	#FFFFFF	#000000	##FFFFFF
##181F38	1.00	16.25	1.29	16.25
#FFFFFF	16.25	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#152239

Deuteranopia (green-blind)

#121F37

Tritanopia (blue-blind)

#0B2428

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #181f38;
/* rgb */ color: rgb(24, 31, 56);
/* oklch */ color: oklch(24.6% 0.049 270.7);

Tailwind

colors: {
  custom: {
    50: '#575a6e',
    500: '#181f38',
    950: '#000000',
  },
}

SCSS

$custom: #181f38;
$custom-light: #575a6e;
$custom-dark: #000000;

JSON

{
  "hex": "#181f38",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 56
  },
  "hsl": {
    "h": 226.875,
    "s": 40,
    "l": 15.686
  },
  "oklch": {
    "l": 0.24633,
    "c": 0.04877,
    "h": 270.7
  },
  "luminance": 0.0146
}

Semantic roles & 50–950 ramp

primary

#181F38

secondary

#6E633E

accent

#B658D0

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030307

muted

#78787A

Preview Lab

Preview with #181F38

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

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