#181D3C#181D3C

#181D3C is a very dark, muted blue. Relative luminance 0.014; OKLCH L 24.4% C 0.059 H 274.3°. Best body text is #FFFFFF at 16.41:1 contrast (WCAG AA passes).

Color values

HEX	#181D3C
RGB	rgb(24, 29, 60)
HSL	hsl(232, 43%, 16%)
HSV	hsv(232, 60%, 24%)
CMYK	cmyk(60%, 51.7%, 0%, 76.5%)
CIE-LAB	lab(11.95, 8.50, -20.74)
CIE-LCH	lch(11.95, 22.41, 292.27°)
OKLab	oklab(24.42% 0.0044 -0.0589)
OKLCH	oklch(24.42% 0.059 274.3)
XYZ	xyz(1.6314, 1.3991, 4.4582)
Luminance	0.0140 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D3C #3C3718

analogous

#182F3C #181D3C #25183C

triadic

#181D3C #3C181D #1D3C18

tetradic

#181D3C #3C182F #3C3718 #183C25

square

#181D3C #3C182F #3C3718 #183C25

split-complementary

#181D3C #3C2518 #2F3C18

monochromatic

#090B16 #090B16 #181D3C #293268 #3B4793

Accessibility & contrast

On white

16.41

#181D3C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#181D3C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D3C

16.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D3C	#FFFFFF	#000000	##FFFFFF
##181D3C	1.00	16.41	1.28	16.41
#FFFFFF	16.41	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10213D

Deuteranopia (green-blind)

#0C1E3B

Tritanopia (blue-blind)

#082429

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #181d3c;
/* rgb */ color: rgb(24, 29, 60);
/* oklch */ color: oklch(24.4% 0.059 274.3);

Tailwind

colors: {
  custom: {
    50: '#585872',
    500: '#181d3c',
    950: '#000000',
  },
}

SCSS

$custom: #181d3c;
$custom-light: #585872;
$custom-dark: #000000;

JSON

{
  "hex": "#181d3c",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 60
  },
  "hsl": {
    "h": 231.667,
    "s": 42.857,
    "l": 16.471
  },
  "oklch": {
    "l": 0.24415,
    "c": 0.05912,
    "h": 274.3
  },
  "luminance": 0.01399
}

Semantic roles & 50–950 ramp

primary

#181D3C

secondary

#726B3E

accent

#C155D3

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030308

muted

#78787B

Preview Lab

Preview with #181D3C

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

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