#331B39#331B39

#331B39 is a dark, moderate purple. Relative luminance 0.018; OKLCH L 26.9% C 0.062 H 319.4°. Best body text is #FFFFFF at 15.48:1 contrast (WCAG AA passes).

Color values

HEX	#331B39
RGB	rgb(51, 27, 57)
HSL	hsl(288, 36%, 16%)
HSV	hsv(288, 53%, 22%)
CMYK	cmyk(10.5%, 52.6%, 0%, 77.6%)
CIE-LAB	lab(14.31, 17.98, -14.69)
CIE-LCH	lch(14.31, 23.22, 320.75°)
OKLab	oklab(26.86% 0.0473 -0.0405)
OKLCH	oklch(26.86% 0.062 319.4)
XYZ	xyz(2.4956, 1.7832, 4.0828)
Luminance	0.0178 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B39 #21391B

analogous

#241B39 #331B39 #391B30

triadic

#331B39 #39331B #1B3933

tetradic

#331B39 #39241B #21391B #1B3039

square

#331B39 #39241B #21391B #1B3039

split-complementary

#331B39 #30391B #1B3924

monochromatic

#130A15 #130A15 #331B39 #582F63 #7D428C

Accessibility & contrast

On white

15.48

#331B39 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#331B39 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B39

15.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B39	#FFFFFF	#000000	##FFFFFF
##331B39	1.00	15.48	1.36	15.48
#FFFFFF	15.48	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16233A

Deuteranopia (green-blind)

#1D2538

Tritanopia (blue-blind)

#331F27

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #331b39;
/* rgb */ color: rgb(51, 27, 57);
/* oklch */ color: oklch(26.9% 0.062 319.4);

Tailwind

colors: {
  custom: {
    50: '#6b586f',
    500: '#331b39',
    950: '#000000',
  },
}

SCSS

$custom: #331b39;
$custom-light: #6b586f;
$custom-dark: #000000;

JSON

{
  "hex": "#331b39",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 57
  },
  "hsl": {
    "h": 288,
    "s": 35.714,
    "l": 16.471
  },
  "oklch": {
    "l": 0.26863,
    "c": 0.06229,
    "h": 319.4
  },
  "luminance": 0.01783
}

Semantic roles & 50–950 ramp

primary

#331B39

secondary

#4B6E42

accent

#CC5C72

background

#F6F5F6

surface

#EBE9EC

border

#C6C5C7

text

#070307

muted

#7A787A

Preview Lab

Preview with #331B39

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

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