#180D59#180D59

#180D59 is a very dark, vivid blue. Relative luminance 0.012; OKLCH L 24.3% C 0.126 H 278.0°. Best body text is #FFFFFF at 16.93:1 contrast (WCAG AA passes).

Color values

HEX	#180D59
RGB	rgb(24, 13, 89)
HSL	hsl(249, 75%, 20%)
HSV	hsv(249, 85%, 35%)
CMYK	cmyk(73%, 85.4%, 0%, 65.1%)
CIE-LAB	lab(10.58, 30.54, -43.06)
CIE-LCH	lch(10.58, 52.79, 305.34°)
OKLab	oklab(24.27% 0.0175 -0.1244)
OKLCH	oklch(24.27% 0.126 278)
XYZ	xyz(2.3232, 1.2031, 9.5590)
Luminance	0.0120 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180D59 #4E590D

analogous

#0D2859 #180D59 #3E0D59

triadic

#180D59 #59180D #0D5918

tetradic

#180D59 #590D28 #4E590D #0D593E

square

#180D59 #590D28 #4E590D #0D593E

split-complementary

#180D59 #593E0D #28590D

monochromatic

#07041B #0A0524 #180D59 #26158E #351DC4

Accessibility & contrast

On white

16.93

#180D59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#180D59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180D59

16.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180D59	#FFFFFF	#000000	##FFFFFF
##180D59	1.00	16.93	1.24	16.93
#FFFFFF	16.93	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00205B

Deuteranopia (green-blind)

#001958

Tritanopia (blue-blind)

#002433

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #180d59;
/* rgb */ color: rgb(24, 13, 89);
/* oklch */ color: oklch(24.3% 0.126 278.0);

Tailwind

colors: {
  custom: {
    50: '#614e89',
    500: '#180d59',
    950: '#000000',
  },
}

SCSS

$custom: #180d59;
$custom-light: #614e89;
$custom-dark: #000000;

JSON

{
  "hex": "#180d59",
  "rgb": {
    "r": 24,
    "g": 13,
    "b": 89
  },
  "hsl": {
    "h": 248.684,
    "s": 74.51,
    "l": 20
  },
  "oklch": {
    "l": 0.24272,
    "c": 0.12563,
    "h": 278
  },
  "luminance": 0.01203
}

Semantic roles & 50–950 ramp

primary

#180D59

secondary

#85932E

accent

#F137D6

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#05020C

muted

#7A787D

Preview Lab

Preview with #180D59

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

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