#181D79#181D79

#181D79 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.4% C 0.152 H 270.8°. Best body text is #FFFFFF at 14.09:1 contrast (WCAG AA passes).

Color values

HEX	#181D79
RGB	rgb(24, 29, 121)
HSL	hsl(237, 67%, 28%)
HSV	hsv(237, 80%, 47%)
CMYK	cmyk(80.2%, 76%, 0%, 52.5%)
CIE-LAB	lab(17.70, 32.41, -52.33)
CIE-LCH	lch(17.70, 61.56, 301.78°)
OKLab	oklab(30.41% 0.0022 -0.1515)
OKLCH	oklch(30.41% 0.152 270.8)
XYZ	xyz(4.2661, 2.4529, 18.3341)
Luminance	0.0245 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D79 #797418

analogous

#184D79 #181D79 #431879

triadic

#181D79 #79181D #1D7918

tetradic

#181D79 #79184D #797418 #187943

square

#181D79 #79184D #797418 #187943

split-complementary

#181D79 #794318 #4D7918

monochromatic

#05061A #0E1146 #181D79 #2229AC #353DD7

Accessibility & contrast

On white

14.09

#181D79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#181D79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D79

14.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D79	#FFFFFF	#000000	##FFFFFF
##181D79	1.00	14.09	1.49	14.09
#FFFFFF	14.09	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00307C

Deuteranopia (green-blind)

#002777

Tritanopia (blue-blind)

#003849

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #181d79;
/* rgb */ color: rgb(24, 29, 121);
/* oklch */ color: oklch(30.4% 0.152 270.8);

Tailwind

colors: {
  custom: {
    50: '#685aa1',
    500: '#181d79',
    950: '#000000',
  },
}

SCSS

$custom: #181d79;
$custom-light: #685aa1;
$custom-dark: #000000;

JSON

{
  "hex": "#181d79",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 121
  },
  "hsl": {
    "h": 236.907,
    "s": 66.897,
    "l": 28.431
  },
  "oklch": {
    "l": 0.30413,
    "c": 0.15155,
    "h": 270.8
  },
  "luminance": 0.02453
}

Semantic roles & 50–950 ramp

primary

#181D79

secondary

#AEA83F

accent

#E13EEA

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #181D79

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

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