#181B77#181B77

#181B77 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.9% C 0.151 H 271.3°. Best body text is #FFFFFF at 14.36:1 contrast (WCAG AA passes).

Color values

HEX	#181B77
RGB	rgb(24, 27, 119)
HSL	hsl(238, 66%, 28%)
HSV	hsv(238, 80%, 47%)
CMYK	cmyk(79.8%, 77.3%, 0%, 53.3%)
CIE-LAB	lab(17.03, 32.93, -52.15)
CIE-LCH	lch(17.03, 61.68, 302.27°)
OKLab	oklab(29.87% 0.0035 -0.151)
OKLCH	oklch(29.87% 0.151 271.3)
XYZ	xyz(4.0973, 2.3095, 17.6790)
Luminance	0.0231 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B77 #777418

analogous

#184A77 #181B77 #441877

triadic

#181B77 #77181B #1B7718

tetradic

#181B77 #77184A #777418 #187744

square

#181B77 #77184A #777418 #187744

split-complementary

#181B77 #774418 #4A7718

monochromatic

#050619 #0E0F44 #181B77 #2227AA #3339D6

Accessibility & contrast

On white

14.36

#181B77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#181B77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B77

14.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B77	#FFFFFF	#000000	##FFFFFF
##181B77	1.00	14.36	1.46	14.36
#FFFFFF	14.36	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F7A

Deuteranopia (green-blind)

#002575

Tritanopia (blue-blind)

#003647

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #181b77;
/* rgb */ color: rgb(24, 27, 119);
/* oklch */ color: oklch(29.9% 0.151 271.3);

Tailwind

colors: {
  custom: {
    50: '#67589f',
    500: '#181b77',
    950: '#000000',
  },
}

SCSS

$custom: #181b77;
$custom-light: #67589f;
$custom-dark: #000000;

JSON

{
  "hex": "#181b77",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 119
  },
  "hsl": {
    "h": 238.105,
    "s": 66.434,
    "l": 28.039
  },
  "oklch": {
    "l": 0.29869,
    "c": 0.15104,
    "h": 271.3
  },
  "luminance": 0.0231
}

Semantic roles & 50–950 ramp

primary

#181B77

secondary

#ACA93F

accent

#E43EE9

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030F

muted

#7A787E

Preview Lab

Preview with #181B77

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

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