#181D42#181D42

#181D42 is a very dark, moderate blue. Relative luminance 0.015; OKLCH L 24.9% C 0.070 H 274.4°. Best body text is #FFFFFF at 16.24:1 contrast (WCAG AA passes).

Color values

HEX	#181D42
RGB	rgb(24, 29, 66)
HSL	hsl(233, 47%, 18%)
HSV	hsv(233, 64%, 26%)
CMYK	cmyk(63.6%, 56.1%, 0%, 74.1%)
CIE-LAB	lab(12.39, 10.88, -24.26)
CIE-LCH	lch(12.39, 26.59, 294.15°)
OKLab	oklab(24.89% 0.0054 -0.0693)
OKLCH	oklch(24.89% 0.07 274.4)
XYZ	xyz(1.7991, 1.4661, 5.3414)
Luminance	0.0147 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D42 #423D18

analogous

#183242 #181D42 #281842

triadic

#181D42 #42181D #1D4218

tetradic

#181D42 #421832 #423D18 #184228

square

#181D42 #421832 #423D18 #184228

split-complementary

#181D42 #422818 #324218

monochromatic

#080A16 #080A16 #181D42 #28316F #39449C

Accessibility & contrast

On white

16.24

#181D42 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#181D42 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D42

16.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D42	#FFFFFF	#000000	##FFFFFF
##181D42	1.00	16.24	1.29	16.24
#FFFFFF	16.24	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A2243

Deuteranopia (green-blind)

#051F41

Tritanopia (blue-blind)

#03252C

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #181d42;
/* rgb */ color: rgb(24, 29, 66);
/* oklch */ color: oklch(24.9% 0.070 274.4);

Tailwind

colors: {
  custom: {
    50: '#595877',
    500: '#181d42',
    950: '#000000',
  },
}

SCSS

$custom: #181d42;
$custom-light: #595877;
$custom-dark: #000000;

JSON

{
  "hex": "#181d42",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 66
  },
  "hsl": {
    "h": 232.857,
    "s": 46.667,
    "l": 17.647
  },
  "oklch": {
    "l": 0.24891,
    "c": 0.06951,
    "h": 274.4
  },
  "luminance": 0.01466
}

Semantic roles & 50–950 ramp

primary

#181D42

secondary

#79723D

accent

#C651D6

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040308

muted

#79787B

Preview Lab

Preview with #181D42

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

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