#331B7B#331B7B

#331B7B is a dark, vivid violet. Relative luminance 0.029; OKLCH L 32.5% C 0.150 H 286.0°. Best body text is #FFFFFF at 13.26:1 contrast (WCAG AA passes).

Color values

HEX	#331B7B
RGB	rgb(51, 27, 123)
HSL	hsl(255, 64%, 29%)
HSV	hsv(255, 78%, 48%)
CMYK	cmyk(58.5%, 78%, 0%, 51.8%)
CIE-LAB	lab(19.71, 37.47, -50.23)
CIE-LCH	lch(19.71, 62.67, 306.73°)
OKLab	oklab(32.46% 0.0414 -0.1446)
OKLCH	oklch(32.46% 0.15 286)
XYZ	xyz(5.3312, 2.9174, 19.0172)
Luminance	0.0292 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B7B #637B1B

analogous

#1B337B #331B7B #631B7B

triadic

#331B7B #7B331B #1B7B33

tetradic

#331B7B #7B1B33 #637B1B #1B7B63

square

#331B7B #7B1B33 #637B1B #1B7B63

split-complementary

#331B7B #7B631B #337B1B

monochromatic

#0A0619 #1E1049 #331B7B #4826AD #623CD4

Accessibility & contrast

On white

13.26

#331B7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#331B7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B7B

13.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B7B	#FFFFFF	#000000	##FFFFFF
##331B7B	1.00	13.26	1.58	13.26
#FFFFFF	13.26	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00327E

Deuteranopia (green-blind)

#002D79

Tritanopia (blue-blind)

#10364A

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #331b7b;
/* rgb */ color: rgb(51, 27, 123);
/* oklch */ color: oklch(32.5% 0.150 286.0);

Tailwind

colors: {
  custom: {
    50: '#745aa2',
    500: '#331b7b',
    950: '#000000',
  },
}

SCSS

$custom: #331b7b;
$custom-light: #745aa2;
$custom-dark: #000000;

JSON

{
  "hex": "#331b7b",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 123
  },
  "hsl": {
    "h": 255,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.32455,
    "c": 0.1504,
    "h": 286
  },
  "luminance": 0.02918
}

Semantic roles & 50–950 ramp

primary

#331B7B

secondary

#94AF43

accent

#E741BD

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#09040F

muted

#7B797F

Preview Lab

Preview with #331B7B

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

Preview Lab → · Contrast checker → · Palette generator →