#182A8A#182A8A

#182A8A is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.5% C 0.159 H 267.9°. Best body text is #FFFFFF at 12.09:1 contrast (WCAG AA passes).

Color values

HEX	#182A8A
RGB	rgb(24, 42, 138)
HSL	hsl(231, 70%, 32%)
HSV	hsv(231, 83%, 54%)
CMYK	cmyk(82.6%, 69.6%, 0%, 45.9%)
CIE-LAB	lab(22.60, 30.36, -55.01)
CIE-LCH	lch(22.60, 62.83, 298.90°)
OKLab	oklab(34.49% -0.0059 -0.1593)
OKLCH	oklch(34.49% 0.159 267.9)
XYZ	xyz(5.7905, 3.6844, 24.4458)
Luminance	0.0369 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182A8A #8A7818

analogous

#18638A #182A8A #3F188A

triadic

#182A8A #8A182A #2A8A18

tetradic

#182A8A #8A1863 #8A7818 #188A3F

square

#182A8A #8A1863 #8A7818 #188A3F

split-complementary

#182A8A #8A3F18 #638A18

monochromatic

#060A22 #0F1A56 #182A8A #213ABE #3F58DE

Accessibility & contrast

On white

12.09

#182A8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#182A8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182A8A

12.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182A8A	#FFFFFF	#000000	##FFFFFF
##182A8A	1.00	12.09	1.74	12.09
#FFFFFF	12.09	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C8D

Deuteranopia (green-blind)

#003188

Tritanopia (blue-blind)

#004456

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #182a8a;
/* rgb */ color: rgb(24, 42, 138);
/* oklch */ color: oklch(34.5% 0.159 267.9);

Tailwind

colors: {
  custom: {
    50: '#6b63ad',
    500: '#182a8a',
    950: '#000000',
  },
}

SCSS

$custom: #182a8a;
$custom-light: #6b63ad;
$custom-dark: #000000;

JSON

{
  "hex": "#182a8a",
  "rgb": {
    "r": 24,
    "g": 42,
    "b": 138
  },
  "hsl": {
    "h": 230.526,
    "s": 70.37,
    "l": 31.765
  },
  "oklch": {
    "l": 0.34487,
    "c": 0.15944,
    "h": 267.9
  },
  "luminance": 0.03685
}

Semantic roles & 50–950 ramp

primary

#182A8A

secondary

#BDAA40

accent

#D13BED

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #182A8A

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

Preview Lab → · Contrast checker → · Palette generator →