#331B9E#331B9E

#331B9E is a dark, vivid violet. Relative luminance 0.040; OKLCH L 36.2% C 0.192 H 279.2°. Best body text is #FFFFFF at 11.72:1 contrast (WCAG AA passes).

Color values

HEX	#331B9E
RGB	rgb(51, 27, 158)
HSL	hsl(251, 71%, 36%)
HSV	hsv(251, 83%, 62%)
CMYK	cmyk(67.7%, 82.9%, 0%, 38%)
CIE-LAB	lab(23.52, 48.09, -65.77)
CIE-LCH	lch(23.52, 81.48, 306.17°)
OKLab	oklab(36.24% 0.0306 -0.1899)
OKLCH	oklch(36.24% 0.192 279.2)
XYZ	xyz(7.9268, 3.9556, 32.6869)
Luminance	0.0396 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B9E #869E1B

analogous

#1B459E #331B9E #751B9E

triadic

#331B9E #9E331B #1B9E33

tetradic

#331B9E #9E1B45 #869E1B #1B9E75

square

#331B9E #9E1B45 #869E1B #1B9E75

split-complementary

#331B9E #9E751B #459E1B

monochromatic

#110935 #22126A #331B9E #4424D2 #6C52E1

Accessibility & contrast

On white

11.72

#331B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#331B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B9E

11.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B9E	#FFFFFF	#000000	##FFFFFF
##331B9E	1.00	11.72	1.79	11.72
#FFFFFF	11.72	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003DA2

Deuteranopia (green-blind)

#00339C

Tritanopia (blue-blind)

#00445E

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #331b9e;
/* rgb */ color: rgb(51, 27, 158);
/* oklch */ color: oklch(36.2% 0.192 279.2);

Tailwind

colors: {
  custom: {
    50: '#7b5dbc',
    500: '#331b9e',
    950: '#000000',
  },
}

SCSS

$custom: #331b9e;
$custom-light: #7b5dbc;
$custom-dark: #000000;

JSON

{
  "hex": "#331b9e",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 158
  },
  "hsl": {
    "h": 250.992,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.36242,
    "c": 0.19238,
    "h": 279.2
  },
  "luminance": 0.03956
}

Semantic roles & 50–950 ramp

primary

#331B9E

secondary

#AFC451

accent

#EE3ACD

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0B0412

muted

#7C7981

Preview Lab

Preview with #331B9E

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

Preview Lab → · Contrast checker → · Palette generator →