#181A71#181A71

#181A71 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.0% C 0.144 H 272.0°. Best body text is #FFFFFF at 14.74:1 contrast (WCAG AA passes).

Color values

HEX	#181A71
RGB	rgb(24, 26, 113)
HSL	hsl(239, 65%, 27%)
HSV	hsv(239, 79%, 44%)
CMYK	cmyk(78.8%, 77%, 0%, 55.7%)
CIE-LAB	lab(16.13, 31.36, -49.78)
CIE-LCH	lch(16.13, 58.83, 302.21°)
OKLab	oklab(29.02% 0.005 -0.1441)
OKLCH	oklch(29.02% 0.144 272)
XYZ	xyz(3.7257, 2.1248, 15.8334)
Luminance	0.0213 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A71 #716F18

analogous

#184771 #181A71 #431871

triadic

#181A71 #71181A #1A7118

tetradic

#181A71 #711847 #716F18 #187143

square

#181A71 #711847 #716F18 #187143

split-complementary

#181A71 #714318 #477118

monochromatic

#050619 #0D0E3F #181A71 #2326A3 #3034D3

Accessibility & contrast

On white

14.74

#181A71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#181A71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A71

14.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A71	#FFFFFF	#000000	##FFFFFF
##181A71	1.00	14.74	1.43	14.74
#FFFFFF	14.74	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C74

Deuteranopia (green-blind)

#00246F

Tritanopia (blue-blind)

#003344

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #181a71;
/* rgb */ color: rgb(24, 26, 113);
/* oklch */ color: oklch(29.0% 0.144 272.0);

Tailwind

colors: {
  custom: {
    50: '#66579b',
    500: '#181a71',
    950: '#000000',
  },
}

SCSS

$custom: #181a71;
$custom-light: #66579b;
$custom-dark: #000000;

JSON

{
  "hex": "#181a71",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 113
  },
  "hsl": {
    "h": 238.652,
    "s": 64.964,
    "l": 26.863
  },
  "oklch": {
    "l": 0.29022,
    "c": 0.14417,
    "h": 272
  },
  "luminance": 0.02125
}

Semantic roles & 50–950 ramp

primary

#181A71

secondary

#A6A43E

accent

#E440E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #181A71

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

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