#181A8A#181A8A

#181A8A is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.0% C 0.176 H 270.0°. Best body text is #FFFFFF at 13.52:1 contrast (WCAG AA passes).

Color values

HEX	#181A8A
RGB	rgb(24, 26, 138)
HSL	hsl(239, 70%, 32%)
HSV	hsv(239, 83%, 54%)
CMYK	cmyk(82.6%, 81.2%, 0%, 45.9%)
CIE-LAB	lab(19.09, 40.17, -60.81)
CIE-LCH	lch(19.09, 72.88, 303.45°)
OKLab	oklab(31.98% 0.0001 -0.1761)
OKLCH	oklch(31.98% 0.176 270)
XYZ	xyz(5.3320, 2.7673, 24.2930)
Luminance	0.0277 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A8A #8A8818

analogous

#18538A #181A8A #4F188A

triadic

#181A8A #8A181A #1A8A18

tetradic

#181A8A #8A1853 #8A8818 #188A4F

square

#181A8A #8A1853 #8A8818 #188A4F

split-complementary

#181A8A #8A4F18 #538A18

monochromatic

#060622 #0F1056 #181A8A #2124BE #3F42DE

Accessibility & contrast

On white

13.52

#181A8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#181A8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A8A

13.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A8A	#FFFFFF	#000000	##FFFFFF
##181A8A	1.00	13.52	1.55	13.52
#FFFFFF	13.52	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348D

Deuteranopia (green-blind)

#002888

Tritanopia (blue-blind)

#003D52

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #181a8a;
/* rgb */ color: rgb(24, 26, 138);
/* oklch */ color: oklch(32.0% 0.176 270.0);

Tailwind

colors: {
  custom: {
    50: '#6d59ad',
    500: '#181a8a',
    950: '#000000',
  },
}

SCSS

$custom: #181a8a;
$custom-light: #6d59ad;
$custom-dark: #000000;

JSON

{
  "hex": "#181a8a",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 138
  },
  "hsl": {
    "h": 238.947,
    "s": 70.37,
    "l": 31.765
  },
  "oklch": {
    "l": 0.31976,
    "c": 0.1761,
    "h": 270
  },
  "luminance": 0.02768
}

Semantic roles & 50–950 ramp

primary

#181A8A

secondary

#BDBB40

accent

#EA3BED

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #181A8A

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

Preview Lab → · Contrast checker → · Palette generator →