#331B5B#331B5B

#331B5B is a dark, moderate violet. Relative luminance 0.022; OKLCH L 29.4% C 0.109 H 296.3°. Best body text is #FFFFFF at 14.50:1 contrast (WCAG AA passes).

Color values

HEX	#331B5B
RGB	rgb(51, 27, 91)
HSL	hsl(263, 54%, 23%)
HSV	hsv(263, 70%, 36%)
CMYK	cmyk(44%, 70.3%, 0%, 64.3%)
CIE-LAB	lab(16.71, 27.61, -34.24)
CIE-LCH	lch(16.71, 43.98, 308.88°)
OKLab	oklab(29.4% 0.0482 -0.0977)
OKLCH	oklch(29.4% 0.109 296.3)
XYZ	xyz(3.6450, 2.2429, 10.1364)
Luminance	0.0224 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B5B #435B1B

analogous

#1B235B #331B5B #531B5B

triadic

#331B5B #5B331B #1B5B33

tetradic

#331B5B #5B1B23 #435B1B #1B5B53

square

#331B5B #5B1B23 #435B1B #1B5B53

split-complementary

#331B5B #5B531B #235B1B

monochromatic

#0D0718 #190D2C #331B5B #4D298A #6837B9

Accessibility & contrast

On white

14.50

#331B5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#331B5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B5B

14.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B5B	#FFFFFF	#000000	##FFFFFF
##331B5B	1.00	14.50	1.45	14.50
#FFFFFF	14.50	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A5D

Deuteranopia (green-blind)

#00285A

Tritanopia (blue-blind)

#292A38

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #331b5b;
/* rgb */ color: rgb(51, 27, 91);
/* oklch */ color: oklch(29.4% 0.109 296.3);

Tailwind

colors: {
  custom: {
    50: '#6f598a',
    500: '#331b5b',
    950: '#000000',
  },
}

SCSS

$custom: #331b5b;
$custom-light: #6f598a;
$custom-dark: #000000;

JSON

{
  "hex": "#331b5b",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 91
  },
  "hsl": {
    "h": 262.5,
    "s": 54.237,
    "l": 23.137
  },
  "oklch": {
    "l": 0.294,
    "c": 0.10895,
    "h": 296.3
  },
  "luminance": 0.02243
}

Semantic roles & 50–950 ramp

primary

#331B5B

secondary

#739141

accent

#DE4AA6

background

#F6F5F8

surface

#ECE9F0

border

#C7C5CB

text

#07030C

muted

#7A787D

Preview Lab

Preview with #331B5B

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

Preview Lab → · Contrast checker → · Palette generator →