#181C77#181C77

#181C77 is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.0% C 0.150 H 271.1°. Best body text is #FFFFFF at 14.27:1 contrast (WCAG AA passes).

Color values

HEX	#181C77
RGB	rgb(24, 28, 119)
HSL	hsl(237, 66%, 28%)
HSV	hsv(237, 80%, 47%)
CMYK	cmyk(79.8%, 76.5%, 0%, 53.3%)
CIE-LAB	lab(17.26, 32.31, -51.79)
CIE-LCH	lch(17.26, 61.04, 301.96°)
OKLab	oklab(30.03% 0.003 -0.1499)
OKLCH	oklch(30.03% 0.15 271.1)
XYZ	xyz(4.1206, 2.3562, 17.6868)
Luminance	0.0236 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C77 #777318

analogous

#184B77 #181C77 #431877

triadic

#181C77 #77181C #1C7718

tetradic

#181C77 #77184B #777318 #187743

square

#181C77 #77184B #777318 #187743

split-complementary

#181C77 #774318 #4B7718

monochromatic

#050619 #0E1044 #181C77 #2228AA #333AD6

Accessibility & contrast

On white

14.27

#181C77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#181C77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C77

14.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C77	#FFFFFF	#000000	##FFFFFF
##181C77	1.00	14.27	1.47	14.27
#FFFFFF	14.27	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F7A

Deuteranopia (green-blind)

#002675

Tritanopia (blue-blind)

#003648

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #181c77;
/* rgb */ color: rgb(24, 28, 119);
/* oklch */ color: oklch(30.0% 0.150 271.1);

Tailwind

colors: {
  custom: {
    50: '#67599f',
    500: '#181c77',
    950: '#000000',
  },
}

SCSS

$custom: #181c77;
$custom-light: #67599f;
$custom-dark: #000000;

JSON

{
  "hex": "#181c77",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 119
  },
  "hsl": {
    "h": 237.474,
    "s": 66.434,
    "l": 28.039
  },
  "oklch": {
    "l": 0.30026,
    "c": 0.14998,
    "h": 271.1
  },
  "luminance": 0.02357
}

Semantic roles & 50–950 ramp

primary

#181C77

secondary

#ACA73F

accent

#E23EE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030F

muted

#7A787E

Preview Lab

Preview with #181C77

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

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