#180B37#180B37

#180B37 is a very dark, moderate violet. Relative luminance 0.007; OKLCH L 20.1% C 0.081 H 290.9°. Best body text is #FFFFFF at 18.39:1 contrast (WCAG AA passes).

Color values

HEX	#180B37
RGB	rgb(24, 11, 55)
HSL	hsl(258, 67%, 13%)
HSV	hsv(258, 80%, 22%)
CMYK	cmyk(56.4%, 80%, 0%, 78.4%)
CIE-LAB	lab(6.41, 19.38, -26.08)
CIE-LCH	lch(6.41, 32.49, 306.62°)
OKLab	oklab(20.08% 0.0288 -0.0753)
OKLCH	oklch(20.08% 0.081 290.9)
XYZ	xyz(1.1858, 0.7093, 3.6881)
Luminance	0.0071 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180B37 #2A370B

analogous

#0B1437 #180B37 #2E0B37

triadic

#180B37 #37180B #0B3718

tetradic

#180B37 #370B14 #2A370B #0B372E

square

#180B37 #370B14 #2A370B #0B372E

split-complementary

#180B37 #372E0B #14370B

monochromatic

#0B051A #0B051A #180B37 #2E156A #451F9D

Accessibility & contrast

On white

18.39

#180B37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#180B37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180B37

18.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180B37	#FFFFFF	#000000	##FFFFFF
##180B37	1.00	18.39	1.14	18.39
#FFFFFF	18.39	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001538

Deuteranopia (green-blind)

#001336

Tritanopia (blue-blind)

#0E161F

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #180b37;
/* rgb */ color: rgb(24, 11, 55);
/* oklch */ color: oklch(20.1% 0.081 290.9);

Tailwind

colors: {
  custom: {
    50: '#584b6e',
    500: '#180b37',
    950: '#000000',
  },
}

SCSS

$custom: #180b37;
$custom-light: #584b6e;
$custom-dark: #000000;

JSON

{
  "hex": "#180b37",
  "rgb": {
    "r": 24,
    "g": 11,
    "b": 55
  },
  "hsl": {
    "h": 257.727,
    "s": 66.667,
    "l": 12.941
  },
  "oklch": {
    "l": 0.20083,
    "c": 0.08064,
    "h": 290.9
  },
  "luminance": 0.00709
}

Semantic roles & 50–950 ramp

primary

#180B37

secondary

#5E742A

accent

#EA3EB7

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#040107

muted

#79777A

Preview Lab

Preview with #180B37

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

Preview Lab → · Contrast checker → · Palette generator →