#181578#181578

#181578 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.1% C 0.158 H 272.0°. Best body text is #FFFFFF at 14.82:1 contrast (WCAG AA passes).

Color values

HEX	#181578
RGB	rgb(24, 21, 120)
HSL	hsl(242, 70%, 28%)
HSV	hsv(242, 83%, 47%)
CMYK	cmyk(80%, 82.5%, 0%, 52.9%)
CIE-LAB	lab(15.93, 36.77, -54.62)
CIE-LCH	lch(15.93, 65.84, 303.95°)
OKLab	oklab(29.13% 0.0056 -0.1581)
OKLCH	oklch(29.13% 0.158 272)
XYZ	xyz(4.0339, 2.0861, 17.9557)
Luminance	0.0209 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181578 #757815

analogous

#154478 #181578 #491578

triadic

#181578 #781815 #157818

tetradic

#181578 #781544 #757815 #157849

square

#181578 #781544 #757815 #157849

split-complementary

#181578 #784915 #447815

monochromatic

#05051A #0E0C44 #181578 #221EAC #322DDA

Accessibility & contrast

On white

14.82

#181578 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#181578 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181578

14.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181578	#FFFFFF	#000000	##FFFFFF
##181578	1.00	14.82	1.42	14.82
#FFFFFF	14.82	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C7B

Deuteranopia (green-blind)

#002376

Tritanopia (blue-blind)

#003447

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #181578;
/* rgb */ color: rgb(24, 21, 120);
/* oklch */ color: oklch(29.1% 0.158 272.0);

Tailwind

colors: {
  custom: {
    50: '#6855a0',
    500: '#181578',
    950: '#000000',
  },
}

SCSS

$custom: #181578;
$custom-light: #6855a0;
$custom-dark: #000000;

JSON

{
  "hex": "#181578",
  "rgb": {
    "r": 24,
    "g": 21,
    "b": 120
  },
  "hsl": {
    "h": 241.818,
    "s": 70.213,
    "l": 27.647
  },
  "oklch": {
    "l": 0.29128,
    "c": 0.15818,
    "h": 272
  },
  "luminance": 0.02087
}

Semantic roles & 50–950 ramp

primary

#181578

secondary

#AAAE3B

accent

#ED3BE8

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07030F

muted

#7A787F

Preview Lab

Preview with #181578

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

Preview Lab → · Contrast checker → · Palette generator →