#180F59#180F59

#180F59 is a very dark, vivid blue. Relative luminance 0.013; OKLCH L 24.5% C 0.124 H 277.6°. Best body text is #FFFFFF at 16.78:1 contrast (WCAG AA passes).

Color values

HEX	#180F59
RGB	rgb(24, 15, 89)
HSL	hsl(247, 71%, 20%)
HSV	hsv(247, 83%, 35%)
CMYK	cmyk(73%, 83.1%, 0%, 65.1%)
CIE-LAB	lab(10.97, 29.41, -42.42)
CIE-LCH	lch(10.97, 51.62, 304.74°)
OKLab	oklab(24.55% 0.0164 -0.1225)
OKLCH	oklch(24.55% 0.124 277.6)
XYZ	xyz(2.3501, 1.2569, 9.5680)
Luminance	0.0126 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180F59 #50590F

analogous

#0F2B59 #180F59 #3D0F59

triadic

#180F59 #59180F #0F5918

tetradic

#180F59 #590F2B #50590F #0F593D

square

#180F59 #590F2B #50590F #0F593D

split-complementary

#180F59 #593D0F #2B590F

monochromatic

#07041A #0A0625 #180F59 #26188D #3421C2

Accessibility & contrast

On white

16.78

#180F59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#180F59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180F59

16.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180F59	#FFFFFF	#000000	##FFFFFF
##180F59	1.00	16.78	1.25	16.78
#FFFFFF	16.78	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00205B

Deuteranopia (green-blind)

#001A58

Tritanopia (blue-blind)

#002533

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #180f59;
/* rgb */ color: rgb(24, 15, 89);
/* oklch */ color: oklch(24.5% 0.124 277.6);

Tailwind

colors: {
  custom: {
    50: '#604f89',
    500: '#180f59',
    950: '#000000',
  },
}

SCSS

$custom: #180f59;
$custom-light: #604f89;
$custom-dark: #000000;

JSON

{
  "hex": "#180f59",
  "rgb": {
    "r": 24,
    "g": 15,
    "b": 89
  },
  "hsl": {
    "h": 247.297,
    "s": 71.154,
    "l": 20.392
  },
  "oklch": {
    "l": 0.24545,
    "c": 0.12364,
    "h": 277.6
  },
  "luminance": 0.01257
}

Semantic roles & 50–950 ramp

primary

#180F59

secondary

#879331

accent

#EE3AD8

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#05020C

muted

#7A787D

Preview Lab

Preview with #180F59

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

Preview Lab → · Contrast checker → · Palette generator →