#181C6F#181C6F

#181C6F is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.1% C 0.139 H 271.8°. Best body text is #FFFFFF at 14.64:1 contrast (WCAG AA passes).

Color values

HEX	#181C6F
RGB	rgb(24, 28, 111)
HSL	hsl(237, 64%, 26%)
HSV	hsv(237, 78%, 44%)
CMYK	cmyk(78.4%, 74.8%, 0%, 56.5%)
CIE-LAB	lab(16.37, 29.34, -48.09)
CIE-LCH	lch(16.37, 56.33, 301.39°)
OKLab	oklab(29.12% 0.0043 -0.1392)
OKLCH	oklch(29.12% 0.139 271.8)
XYZ	xyz(3.6602, 2.1720, 15.2622)
Luminance	0.0217 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C6F #6F6B18

analogous

#18486F #181C6F #40186F

triadic

#181C6F #6F181C #1C6F18

tetradic

#181C6F #6F1848 #6F6B18 #186F40

square

#181C6F #6F1848 #6F6B18 #186F40

split-complementary

#181C6F #6F4018 #486F18

monochromatic

#050619 #0D0F3D #181C6F #2329A1 #2F37D2

Accessibility & contrast

On white

14.64

#181C6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#181C6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C6F

14.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C6F	#FFFFFF	#000000	##FFFFFF
##181C6F	1.00	14.64	1.43	14.64
#FFFFFF	14.64	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D71

Deuteranopia (green-blind)

#00246D

Tritanopia (blue-blind)

#003343

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #181c6f;
/* rgb */ color: rgb(24, 28, 111);
/* oklch */ color: oklch(29.1% 0.139 271.8);

Tailwind

colors: {
  custom: {
    50: '#655999',
    500: '#181c6f',
    950: '#000000',
  },
}

SCSS

$custom: #181c6f;
$custom-light: #655999;
$custom-dark: #000000;

JSON

{
  "hex": "#181c6f",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 111
  },
  "hsl": {
    "h": 237.241,
    "s": 64.444,
    "l": 26.471
  },
  "oklch": {
    "l": 0.29124,
    "c": 0.13925,
    "h": 271.8
  },
  "luminance": 0.02172
}

Semantic roles & 50–950 ramp

primary

#181C6F

secondary

#A5A03E

accent

#E040E7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030E

muted

#7A787E

Preview Lab

Preview with #181C6F

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

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