#180C5A#180C5A

#180C5A is a very dark, vivid blue. Relative luminance 0.012; OKLCH L 24.3% C 0.128 H 278.0°. Best body text is #FFFFFF at 16.95:1 contrast (WCAG AA passes).

Color values

HEX	#180C5A
RGB	rgb(24, 12, 90)
HSL	hsl(249, 76%, 20%)
HSV	hsv(249, 87%, 35%)
CMYK	cmyk(73.3%, 86.7%, 0%, 64.7%)
CIE-LAB	lab(10.52, 31.41, -43.84)
CIE-LCH	lch(10.52, 53.93, 305.62°)
OKLab	oklab(24.27% 0.0177 -0.1266)
OKLCH	oklch(24.27% 0.128 278)
XYZ	xyz(2.3530, 1.1951, 9.7776)
Luminance	0.0120 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180C5A #4E5A0C

analogous

#0C275A #180C5A #3F0C5A

triadic

#180C5A #5A180C #0C5A18

tetradic

#180C5A #5A0C27 #4E5A0C #0C5A3F

square

#180C5A #5A0C27 #4E5A0C #0C5A3F

split-complementary

#180C5A #5A3F0C #275A0C

monochromatic

#07041B #0A0524 #180C5A #261390 #351AC6

Accessibility & contrast

On white

16.95

#180C5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#180C5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180C5A

16.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180C5A	#FFFFFF	#000000	##FFFFFF
##180C5A	1.00	16.95	1.24	16.95
#FFFFFF	16.95	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00205C

Deuteranopia (green-blind)

#001959

Tritanopia (blue-blind)

#002433

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #180c5a;
/* rgb */ color: rgb(24, 12, 90);
/* oklch */ color: oklch(24.3% 0.128 278.0);

Tailwind

colors: {
  custom: {
    50: '#614d8a',
    500: '#180c5a',
    950: '#000000',
  },
}

SCSS

$custom: #180c5a;
$custom-light: #614d8a;
$custom-dark: #000000;

JSON

{
  "hex": "#180c5a",
  "rgb": {
    "r": 24,
    "g": 12,
    "b": 90
  },
  "hsl": {
    "h": 249.231,
    "s": 76.471,
    "l": 20
  },
  "oklch": {
    "l": 0.24268,
    "c": 0.12787,
    "h": 278
  },
  "luminance": 0.01195
}

Semantic roles & 50–950 ramp

primary

#180C5A

secondary

#85952D

accent

#F335D6

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06010C

muted

#7A777D

Preview Lab

Preview with #180C5A

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

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