#331B88#331B88

#331B88 is a dark, vivid violet. Relative luminance 0.033; OKLCH L 33.8% C 0.166 H 283.0°. Best body text is #FFFFFF at 12.70:1 contrast (WCAG AA passes).

Color values

HEX	#331B88
RGB	rgb(51, 27, 136)
HSL	hsl(253, 67%, 32%)
HSV	hsv(253, 80%, 53%)
CMYK	cmyk(62.5%, 80.1%, 0%, 46.7%)
CIE-LAB	lab(21.07, 41.47, -56.20)
CIE-LCH	lch(21.07, 69.84, 306.42°)
OKLab	oklab(33.82% 0.0375 -0.1621)
OKLCH	oklch(33.82% 0.166 283)
XYZ	xyz(6.1997, 3.2648, 23.5913)
Luminance	0.0326 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B88 #70881B

analogous

#1B3A88 #331B88 #6A1B88

triadic

#331B88 #88331B #1B8833

tetradic

#331B88 #881B3A #70881B #1B886A

square

#331B88 #881B3A #70881B #1B886A

split-complementary

#331B88 #886A1B #3A881B

monochromatic

#0D0722 #201155 #331B88 #4625BB #6544DA

Accessibility & contrast

On white

12.70

#331B88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#331B88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B88

12.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B88	#FFFFFF	#000000	##FFFFFF
##331B88	1.00	12.70	1.65	12.70
#FFFFFF	12.70	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368B

Deuteranopia (green-blind)

#002F86

Tritanopia (blue-blind)

#003B51

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #331b88;
/* rgb */ color: rgb(51, 27, 136);
/* oklch */ color: oklch(33.8% 0.166 283.0);

Tailwind

colors: {
  custom: {
    50: '#765bac',
    500: '#331b88',
    950: '#000000',
  },
}

SCSS

$custom: #331b88;
$custom-light: #765bac;
$custom-dark: #000000;

JSON

{
  "hex": "#331b88",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 136
  },
  "hsl": {
    "h": 253.211,
    "s": 66.871,
    "l": 31.961
  },
  "oklch": {
    "l": 0.3382,
    "c": 0.16635,
    "h": 283
  },
  "luminance": 0.03265
}

Semantic roles & 50–950 ramp

primary

#331B88

secondary

#A1BB44

accent

#EA3EC4

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#0A0410

muted

#7C797F

Preview Lab

Preview with #331B88

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

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