#181F3E#181F3E

#181F3E is a dark, muted blue. Relative luminance 0.015; OKLCH L 25.1% C 0.059 H 271.9°. Best body text is #FFFFFF at 16.10:1 contrast (WCAG AA passes).

Color values

HEX	#181F3E
RGB	rgb(24, 31, 62)
HSL	hsl(229, 44%, 17%)
HSV	hsv(229, 61%, 24%)
CMYK	cmyk(61.3%, 50%, 0%, 75.7%)
CIE-LAB	lab(12.75, 7.77, -20.89)
CIE-LCH	lch(12.75, 22.29, 290.40°)
OKLab	oklab(25.07% 0.002 -0.0593)
OKLCH	oklch(25.07% 0.059 271.9)
XYZ	xyz(1.7359, 1.5218, 4.7588)
Luminance	0.0152 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F3E #3E3718

analogous

#18323E #181F3E #24183E

triadic

#181F3E #3E181F #1F3E18

tetradic

#181F3E #3E1832 #3E3718 #183E24

square

#181F3E #3E1832 #3E3718 #183E24

split-complementary

#181F3E #3E2418 #323E18

monochromatic

#090B16 #090B16 #181F3E #29356A #3A4B96

Accessibility & contrast

On white

16.10

#181F3E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#181F3E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F3E

16.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F3E	#FFFFFF	#000000	##FFFFFF
##181F3E	1.00	16.10	1.30	16.10
#FFFFFF	16.10	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#12233F

Deuteranopia (green-blind)

#0D1F3D

Tritanopia (blue-blind)

#06262B

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #181f3e;
/* rgb */ color: rgb(24, 31, 62);
/* oklch */ color: oklch(25.1% 0.059 271.9);

Tailwind

colors: {
  custom: {
    50: '#585a73',
    500: '#181f3e',
    950: '#000000',
  },
}

SCSS

$custom: #181f3e;
$custom-light: #585a73;
$custom-dark: #000000;

JSON

{
  "hex": "#181f3e",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 62
  },
  "hsl": {
    "h": 228.947,
    "s": 44.186,
    "l": 16.863
  },
  "oklch": {
    "l": 0.25067,
    "c": 0.05938,
    "h": 271.9
  },
  "luminance": 0.01522
}

Semantic roles & 50–950 ramp

primary

#181F3E

secondary

#746A3D

accent

#BC54D4

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #181F3E

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

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