#181F6A#181F6A

#181F6A is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.1% C 0.129 H 271.4°. Best body text is #FFFFFF at 14.55:1 contrast (WCAG AA passes).

Color values

HEX	#181F6A
RGB	rgb(24, 31, 106)
HSL	hsl(235, 63%, 25%)
HSV	hsv(235, 77%, 42%)
CMYK	cmyk(77.4%, 70.8%, 0%, 58.4%)
CIE-LAB	lab(16.57, 25.42, -44.49)
CIE-LCH	lch(16.57, 51.24, 299.74°)
OKLab	oklab(29.12% 0.0031 -0.1287)
OKLCH	oklch(29.12% 0.129 271.4)
XYZ	xyz(3.4673, 2.2144, 13.8776)
Luminance	0.0221 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F6A #6A6318

analogous

#18486A #181F6A #3A186A

triadic

#181F6A #6A181F #1F6A18

tetradic

#181F6A #6A1848 #6A6318 #186A3A

square

#181F6A #6A1848 #6A6318 #186A3A

split-complementary

#181F6A #6A3A18 #486A18

monochromatic

#060719 #0D1038 #181F6A #232E9C #2F3CCE

Accessibility & contrast

On white

14.55

#181F6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#181F6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F6A

14.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F6A	#FFFFFF	#000000	##FFFFFF
##181F6A	1.00	14.55	1.44	14.55
#FFFFFF	14.55	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D6C

Deuteranopia (green-blind)

#002569

Tritanopia (blue-blind)

#003341

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #181f6a;
/* rgb */ color: rgb(24, 31, 106);
/* oklch */ color: oklch(29.1% 0.129 271.4);

Tailwind

colors: {
  custom: {
    50: '#635b95',
    500: '#181f6a',
    950: '#000000',
  },
}

SCSS

$custom: #181f6a;
$custom-light: #635b95;
$custom-dark: #000000;

JSON

{
  "hex": "#181f6a",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 106
  },
  "hsl": {
    "h": 234.878,
    "s": 63.077,
    "l": 25.49
  },
  "oklch": {
    "l": 0.29115,
    "c": 0.1287,
    "h": 271.4
  },
  "luminance": 0.02215
}

Semantic roles & 50–950 ramp

primary

#181F6A

secondary

#A0983E

accent

#D842E6

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040D

muted

#7A797E

Preview Lab

Preview with #181F6A

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

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