#331B76#331B76

#331B76 is a dark, vivid violet. Relative luminance 0.028; OKLCH L 31.9% C 0.144 H 287.2°. Best body text is #FFFFFF at 13.47:1 contrast (WCAG AA passes).

Color values

HEX	#331B76
RGB	rgb(51, 27, 118)
HSL	hsl(256, 63%, 28%)
HSV	hsv(256, 77%, 46%)
CMYK	cmyk(56.8%, 77.1%, 0%, 53.7%)
CIE-LAB	lab(19.21, 35.93, -47.86)
CIE-LCH	lch(19.21, 59.84, 306.90°)
OKLab	oklab(31.95% 0.0427 -0.1377)
OKLCH	oklch(31.95% 0.144 287.2)
XYZ	xyz(5.0262, 2.7954, 17.4108)
Luminance	0.0280 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B76 #5E761B

analogous

#1B3076 #331B76 #601B76

triadic

#331B76 #76331B #1B7633

tetradic

#331B76 #761B30 #5E761B #1B7660

square

#331B76 #761B30 #5E761B #1B7660

split-complementary

#331B76 #76601B #30761B

monochromatic

#0B0619 #1D1044 #331B76 #4926A8 #623AD2

Accessibility & contrast

On white

13.47

#331B76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#331B76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B76

13.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B76	#FFFFFF	#000000	##FFFFFF
##331B76	1.00	13.47	1.56	13.47
#FFFFFF	13.47	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003179

Deuteranopia (green-blind)

#002C74

Tritanopia (blue-blind)

#173447

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #331b76;
/* rgb */ color: rgb(51, 27, 118);
/* oklch */ color: oklch(31.9% 0.144 287.2);

Tailwind

colors: {
  custom: {
    50: '#735a9e',
    500: '#331b76',
    950: '#000000',
  },
}

SCSS

$custom: #331b76;
$custom-light: #735a9e;
$custom-dark: #000000;

JSON

{
  "hex": "#331b76",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 118
  },
  "hsl": {
    "h": 255.824,
    "s": 62.759,
    "l": 28.431
  },
  "oklch": {
    "l": 0.31946,
    "c": 0.14414,
    "h": 287.2
  },
  "luminance": 0.02796
}

Semantic roles & 50–950 ramp

primary

#331B76

secondary

#8FAA42

accent

#E642BB

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#09040E

muted

#7B797E

Preview Lab

Preview with #331B76

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

Preview Lab → · Contrast checker → · Palette generator →