#181A63#181A63

#181A63 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.5% C 0.125 H 273.3°. Best body text is #FFFFFF at 15.36:1 contrast (WCAG AA passes).

Color values

HEX	#181A63
RGB	rgb(24, 26, 99)
HSL	hsl(238, 61%, 24%)
HSV	hsv(238, 76%, 39%)
CMYK	cmyk(75.8%, 73.7%, 0%, 61.2%)
CIE-LAB	lab(14.59, 26.13, -43.15)
CIE-LCH	lch(14.59, 50.44, 301.20°)
OKLab	oklab(27.46% 0.0073 -0.1247)
OKLCH	oklch(27.46% 0.125 273.3)
XYZ	xyz(2.9975, 1.8335, 11.9979)
Luminance	0.0183 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A63 #636118

analogous

#184063 #181A63 #3C1863

triadic

#181A63 #63181A #1A6318

tetradic

#181A63 #631840 #636118 #18633C

square

#181A63 #631840 #636118 #18633C

split-complementary

#181A63 #633C18 #406318

monochromatic

#060619 #0C0D32 #181A63 #242794 #3034C6

Accessibility & contrast

On white

15.36

#181A63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#181A63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A63

15.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A63	#FFFFFF	#000000	##FFFFFF
##181A63	1.00	15.36	1.37	15.36
#FFFFFF	15.36	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002865

Deuteranopia (green-blind)

#002162

Tritanopia (blue-blind)

#002E3C

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #181a63;
/* rgb */ color: rgb(24, 26, 99);
/* oklch */ color: oklch(27.5% 0.125 273.3);

Tailwind

colors: {
  custom: {
    50: '#625790',
    500: '#181a63',
    950: '#000000',
  },
}

SCSS

$custom: #181a63;
$custom-light: #625790;
$custom-dark: #000000;

JSON

{
  "hex": "#181a63",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 99
  },
  "hsl": {
    "h": 238.4,
    "s": 60.976,
    "l": 24.118
  },
  "oklch": {
    "l": 0.27456,
    "c": 0.12496,
    "h": 273.3
  },
  "luminance": 0.01834
}

Semantic roles & 50–950 ramp

primary

#181A63

secondary

#99973E

accent

#E044E4

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030D

muted

#7A787D

Preview Lab

Preview with #181A63

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

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