#181D80#181D80

#181D80 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.2% C 0.161 H 270.4°. Best body text is #FFFFFF at 13.76:1 contrast (WCAG AA passes).

Color values

HEX	#181D80
RGB	rgb(24, 29, 128)
HSL	hsl(237, 68%, 30%)
HSV	hsv(237, 81%, 50%)
CMYK	cmyk(81.3%, 77.3%, 0%, 49.8%)
CIE-LAB	lab(18.50, 34.96, -55.48)
CIE-LCH	lch(18.50, 65.57, 302.22°)
OKLab	oklab(31.22% 0.001 -0.1607)
OKLCH	oklch(31.22% 0.161 270.4)
XYZ	xyz(4.7110, 2.6309, 20.6774)
Luminance	0.0263 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D80 #807B18

analogous

#185180 #181D80 #471880

triadic

#181D80 #80181D #1D8018

tetradic

#181D80 #801851 #807B18 #188047

square

#181D80 #801851 #807B18 #188047

split-complementary

#181D80 #804718 #518018

monochromatic

#05061A #0E114C #181D80 #2229B4 #3940DA

Accessibility & contrast

On white

13.76

#181D80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#181D80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D80

13.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D80	#FFFFFF	#000000	##FFFFFF
##181D80	1.00	13.76	1.53	13.76
#FFFFFF	13.76	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003283

Deuteranopia (green-blind)

#00287E

Tritanopia (blue-blind)

#003A4D

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #181d80;
/* rgb */ color: rgb(24, 29, 128);
/* oklch */ color: oklch(31.2% 0.161 270.4);

Tailwind

colors: {
  custom: {
    50: '#6a5aa6',
    500: '#181d80',
    950: '#000000',
  },
}

SCSS

$custom: #181d80;
$custom-light: #6a5aa6;
$custom-dark: #000000;

JSON

{
  "hex": "#181d80",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 128
  },
  "hsl": {
    "h": 237.115,
    "s": 68.421,
    "l": 29.804
  },
  "oklch": {
    "l": 0.31216,
    "c": 0.16067,
    "h": 270.4
  },
  "luminance": 0.02631
}

Semantic roles & 50–950 ramp

primary

#181D80

secondary

#B4AF40

accent

#E33DEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #181D80

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

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