#331B5A#331B5A

#331B5A is a dark, moderate violet. Relative luminance 0.022; OKLCH L 29.3% C 0.108 H 296.7°. Best body text is #FFFFFF at 14.53:1 contrast (WCAG AA passes).

Color values

HEX	#331B5A
RGB	rgb(51, 27, 90)
HSL	hsl(263, 54%, 23%)
HSV	hsv(263, 70%, 35%)
CMYK	cmyk(43.3%, 70%, 0%, 64.7%)
CIE-LAB	lab(16.63, 27.30, -33.71)
CIE-LCH	lch(16.63, 43.38, 309.01°)
OKLab	oklab(29.31% 0.0484 -0.0961)
OKLCH	oklch(29.31% 0.108 296.7)
XYZ	xyz(3.6022, 2.2258, 9.9107)
Luminance	0.0223 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B5A #425A1B

analogous

#1B225A #331B5A #521B5A

triadic

#331B5A #5A331B #1B5A33

tetradic

#331B5A #5A1B22 #425A1B #1B5A52

square

#331B5A #5A1B22 #425A1B #1B5A52

split-complementary

#331B5A #5A521B #225A1B

monochromatic

#0D0718 #180D2B #331B5A #4E2989 #6837B8

Accessibility & contrast

On white

14.53

#331B5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#331B5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B5A

14.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B5A	#FFFFFF	#000000	##FFFFFF
##331B5A	1.00	14.53	1.45	14.53
#FFFFFF	14.53	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00295C

Deuteranopia (green-blind)

#002859

Tritanopia (blue-blind)

#292A37

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #331b5a;
/* rgb */ color: rgb(51, 27, 90);
/* oklch */ color: oklch(29.3% 0.108 296.7);

Tailwind

colors: {
  custom: {
    50: '#6e5989',
    500: '#331b5a',
    950: '#000000',
  },
}

SCSS

$custom: #331b5a;
$custom-light: #6e5989;
$custom-dark: #000000;

JSON

{
  "hex": "#331b5a",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 90
  },
  "hsl": {
    "h": 262.857,
    "s": 53.846,
    "l": 22.941
  },
  "oklch": {
    "l": 0.29314,
    "c": 0.10761,
    "h": 296.7
  },
  "luminance": 0.02226
}

Semantic roles & 50–950 ramp

primary

#331B5A

secondary

#729041

accent

#DD4BA5

background

#F6F5F8

surface

#ECE9F0

border

#C7C5CB

text

#07030B

muted

#7A787C

Preview Lab

Preview with #331B5A

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

Preview Lab → · Contrast checker → · Palette generator →