#181E2A#181E2A

#181E2A is a very dark, muted blue. Relative luminance 0.013; OKLCH L 23.5% C 0.025 H 263.9°. Best body text is #FFFFFF at 16.69:1 contrast (WCAG AA passes).

Color values

HEX	#181E2A
RGB	rgb(24, 30, 42)
HSL	hsl(220, 27%, 13%)
HSV	hsv(220, 43%, 16%)
CMYK	cmyk(42.9%, 28.6%, 0%, 83.5%)
CIE-LAB	lab(11.20, 1.04, -8.96)
CIE-LCH	lch(11.20, 9.02, 276.60°)
OKLab	oklab(23.48% -0.0026 -0.0248)
OKLCH	oklch(23.48% 0.025 263.9)
XYZ	xyz(1.2588, 1.2899, 2.3727)
Luminance	0.0129 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181E2A #2A2418

analogous

#18272A #181E2A #1B182A

triadic

#181E2A #2A181E #1E2A18

tetradic

#181E2A #2A1827 #2A2418 #182A1B

square

#181E2A #2A1827 #2A2418 #182A1B

split-complementary

#181E2A #2A1B18 #272A18

monochromatic

#0B0E13 #0B0E13 #181E2A #2E3A51 #455678

Accessibility & contrast

On white

16.69

#181E2A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#181E2A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181E2A

16.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181E2A	#FFFFFF	#000000	##FFFFFF
##181E2A	1.00	16.69	1.26	16.69
#FFFFFF	16.69	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A1F2B

Deuteranopia (green-blind)

#181D2A

Tritanopia (blue-blind)

#132022

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #181e2a;
/* rgb */ color: rgb(24, 30, 42);
/* oklch */ color: oklch(23.5% 0.025 263.9);

Tailwind

colors: {
  custom: {
    50: '#555963',
    500: '#181e2a',
    950: '#000000',
  },
}

SCSS

$custom: #181e2a;
$custom-light: #555963;
$custom-dark: #000000;

JSON

{
  "hex": "#181e2a",
  "rgb": {
    "r": 24,
    "g": 30,
    "b": 42
  },
  "hsl": {
    "h": 220,
    "s": 27.273,
    "l": 12.941
  },
  "oklch": {
    "l": 0.23483,
    "c": 0.02493,
    "h": 263.9
  },
  "luminance": 0.0129
}

Semantic roles & 50–950 ramp

primary

#181E2A

secondary

#5E5440

accent

#A464C4

background

#F5F5F5

surface

#E8E9EA

border

#C4C5C6

text

#030305

muted

#787879

Preview Lab

Preview with #181E2A

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

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