#181A2A#181A2A

#181A2A is a very dark, muted blue. Relative luminance 0.011; OKLCH L 22.4% C 0.031 H 278.1°. Best body text is #FFFFFF at 17.21:1 contrast (WCAG AA passes).

Color values

HEX	#181A2A
RGB	rgb(24, 26, 42)
HSL	hsl(233, 27%, 13%)
HSV	hsv(233, 43%, 16%)
CMYK	cmyk(42.9%, 38.1%, 0%, 83.5%)
CIE-LAB	lab(9.80, 4.04, -11.13)
CIE-LCH	lch(9.80, 11.84, 289.97°)
OKLab	oklab(22.39% 0.0044 -0.031)
OKLCH	oklch(22.39% 0.031 278.1)
XYZ	xyz(1.1639, 1.1001, 2.3411)
Luminance	0.0110 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A2A #2A2818

analogous

#18232A #181A2A #1F182A

triadic

#181A2A #2A181A #1A2A18

tetradic

#181A2A #2A1823 #2A2818 #182A1F

square

#181A2A #2A1823 #2A2818 #182A1F

split-complementary

#181A2A #2A1F18 #232A18

monochromatic

#0B0C13 #0B0C13 #181A2A #2E3251 #454A78

Accessibility & contrast

On white

17.21

#181A2A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#181A2A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A2A

17.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A2A	#FFFFFF	#000000	##FFFFFF
##181A2A	1.00	17.21	1.22	17.21
#FFFFFF	17.21	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#151C2B

Deuteranopia (green-blind)

#141A2A

Tritanopia (blue-blind)

#131D20

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #181a2a;
/* rgb */ color: rgb(24, 26, 42);
/* oklch */ color: oklch(22.4% 0.031 278.1);

Tailwind

colors: {
  custom: {
    50: '#555663',
    500: '#181a2a',
    950: '#000000',
  },
}

SCSS

$custom: #181a2a;
$custom-light: #555663;
$custom-dark: #000000;

JSON

{
  "hex": "#181a2a",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 42
  },
  "hsl": {
    "h": 233.333,
    "s": 27.273,
    "l": 12.941
  },
  "oklch": {
    "l": 0.2239,
    "c": 0.03131,
    "h": 278.1
  },
  "luminance": 0.011
}

Semantic roles & 50–950 ramp

primary

#181A2A

secondary

#5E5B40

accent

#B964C4

background

#F5F5F5

surface

#E8E9EA

border

#C4C5C6

text

#030305

muted

#787879

Preview Lab

Preview with #181A2A

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

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