#181A3E#181A3E

#181A3E is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 23.8% C 0.068 H 277.6°. Best body text is #FFFFFF at 16.72:1 contrast (WCAG AA passes).

Color values

HEX	#181A3E
RGB	rgb(24, 26, 62)
HSL	hsl(237, 44%, 17%)
HSV	hsv(237, 61%, 24%)
CMYK	cmyk(61.3%, 58.1%, 0%, 75.7%)
CIE-LAB	lab(11.14, 11.57, -23.46)
CIE-LCH	lch(11.14, 26.16, 296.25°)
OKLab	oklab(23.85% 0.0089 -0.067)
OKLCH	oklch(23.85% 0.068 277.6)
XYZ	xyz(1.6153, 1.2807, 4.7186)
Luminance	0.0128 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A3E #3E3C18

analogous

#182D3E #181A3E #29183E

triadic

#181A3E #3E181A #1A3E18

tetradic

#181A3E #3E182D #3E3C18 #183E29

square

#181A3E #3E182D #3E3C18 #183E29

split-complementary

#181A3E #3E2918 #2D3E18

monochromatic

#090916 #090916 #181A3E #292D6A #3A3F96

Accessibility & contrast

On white

16.72

#181A3E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#181A3E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A3E

16.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A3E	#FFFFFF	#000000	##FFFFFF
##181A3E	1.00	16.72	1.26	16.72
#FFFFFF	16.72	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#081F3F

Deuteranopia (green-blind)

#041C3D

Tritanopia (blue-blind)

#072229

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #181a3e;
/* rgb */ color: rgb(24, 26, 62);
/* oklch */ color: oklch(23.8% 0.068 277.6);

Tailwind

colors: {
  custom: {
    50: '#595673',
    500: '#181a3e',
    950: '#000000',
  },
}

SCSS

$custom: #181a3e;
$custom-light: #595673;
$custom-dark: #000000;

JSON

{
  "hex": "#181a3e",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 62
  },
  "hsl": {
    "h": 236.842,
    "s": 44.186,
    "l": 16.863
  },
  "oklch": {
    "l": 0.23848,
    "c": 0.06755,
    "h": 277.6
  },
  "luminance": 0.01281
}

Semantic roles & 50–950 ramp

primary

#181A3E

secondary

#74723D

accent

#CD54D4

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040308

muted

#79787B

Preview Lab

Preview with #181A3E

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

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