#180C56#180C56

#180C56 is a very dark, vivid blue. Relative luminance 0.011; OKLCH L 23.8% C 0.123 H 278.9°. Best body text is #FFFFFF at 17.13:1 contrast (WCAG AA passes).

Color values

HEX	#180C56
RGB	rgb(24, 12, 86)
HSL	hsl(250, 76%, 19%)
HSV	hsv(250, 86%, 34%)
CMYK	cmyk(72.1%, 86%, 0%, 66.3%)
CIE-LAB	lab(10.02, 30.06, -41.95)
CIE-LCH	lch(10.02, 51.61, 305.62°)
OKLab	oklab(23.77% 0.019 -0.1211)
OKLCH	oklch(23.77% 0.123 278.9)
XYZ	xyz(2.1873, 1.1288, 8.9049)
Luminance	0.0113 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180C56 #4A560C

analogous

#0C2556 #180C56 #3D0C56

triadic

#180C56 #56180C #0C5618

tetradic

#180C56 #560C25 #4A560C #0C563D

square

#180C56 #560C25 #4A560C #0C563D

split-complementary

#180C56 #563D0C #25560C

monochromatic

#07041B #090520 #180C56 #27138C #361BC1

Accessibility & contrast

On white

17.13

#180C56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#180C56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180C56

17.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180C56	#FFFFFF	#000000	##FFFFFF
##180C56	1.00	17.13	1.23	17.13
#FFFFFF	17.13	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E58

Deuteranopia (green-blind)

#001955

Tritanopia (blue-blind)

#002331

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #180c56;
/* rgb */ color: rgb(24, 12, 86);
/* oklch */ color: oklch(23.8% 0.123 278.9);

Tailwind

colors: {
  custom: {
    50: '#604d87',
    500: '#180c56',
    950: '#000000',
  },
}

SCSS

$custom: #180c56;
$custom-light: #604d87;
$custom-dark: #000000;

JSON

{
  "hex": "#180c56",
  "rgb": {
    "r": 24,
    "g": 12,
    "b": 86
  },
  "hsl": {
    "h": 249.73,
    "s": 75.51,
    "l": 19.216
  },
  "oklch": {
    "l": 0.23774,
    "c": 0.12264,
    "h": 278.9
  },
  "luminance": 0.01129
}

Semantic roles & 50–950 ramp

primary

#180C56

secondary

#81912D

accent

#F236D4

background

#F6F4F8

surface

#EBE7EF

border

#C6C3CA

text

#05010B

muted

#7A777C

Preview Lab

Preview with #180C56

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

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