#181E78#181E78

#181E78 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.5% C 0.149 H 270.7°. Best body text is #FFFFFF at 14.04:1 contrast (WCAG AA passes).

Color values

HEX	#181E78
RGB	rgb(24, 30, 120)
HSL	hsl(236, 67%, 28%)
HSV	hsv(236, 80%, 47%)
CMYK	cmyk(80%, 75%, 0%, 52.9%)
CIE-LAB	lab(17.82, 31.41, -51.50)
CIE-LCH	lch(17.82, 60.32, 301.38°)
OKLab	oklab(30.46% 0.0019 -0.1491)
OKLCH	oklch(30.46% 0.149 270.7)
XYZ	xyz(4.2300, 2.4783, 18.0211)
Luminance	0.0248 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181E78 #787218

analogous

#184E78 #181E78 #421878

triadic

#181E78 #78181E #1E7818

tetradic

#181E78 #78184E #787218 #187842

square

#181E78 #78184E #787218 #187842

split-complementary

#181E78 #784218 #4E7818

monochromatic

#05061A #0E1145 #181E78 #222BAB #343ED6

Accessibility & contrast

On white

14.04

#181E78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#181E78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181E78

14.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181E78	#FFFFFF	#000000	##FFFFFF
##181E78	1.00	14.04	1.50	14.04
#FFFFFF	14.04	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	14.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00307B

Deuteranopia (green-blind)

#002776

Tritanopia (blue-blind)

#003849

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #181e78;
/* rgb */ color: rgb(24, 30, 120);
/* oklch */ color: oklch(30.5% 0.149 270.7);

Tailwind

colors: {
  custom: {
    50: '#675aa0',
    500: '#181e78',
    950: '#000000',
  },
}

SCSS

$custom: #181e78;
$custom-light: #675aa0;
$custom-dark: #000000;

JSON

{
  "hex": "#181e78",
  "rgb": {
    "r": 24,
    "g": 30,
    "b": 120
  },
  "hsl": {
    "h": 236.25,
    "s": 66.667,
    "l": 28.235
  },
  "oklch": {
    "l": 0.30463,
    "c": 0.14912,
    "h": 270.7
  },
  "luminance": 0.02479
}

Semantic roles & 50–950 ramp

primary

#181E78

secondary

#ADA63F

accent

#DF3EEA

background

#F6F5FA

surface

#EBE9F3

border

#C6C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #181E78

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

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