#331B5E#331B5E

#331B5E is a dark, moderate violet. Relative luminance 0.023; OKLCH L 29.7% C 0.113 H 295.0°. Best body text is #FFFFFF at 14.39:1 contrast (WCAG AA passes).

Color values

HEX	#331B5E
RGB	rgb(51, 27, 94)
HSL	hsl(261, 55%, 24%)
HSV	hsv(261, 71%, 37%)
CMYK	cmyk(45.7%, 71.3%, 0%, 63.1%)
CIE-LAB	lab(16.97, 28.52, -35.83)
CIE-LCH	lch(16.97, 45.79, 308.52°)
OKLab	oklab(29.66% 0.0478 -0.1024)
OKLCH	oklch(29.66% 0.113 295)
XYZ	xyz(3.7770, 2.2957, 10.8316)
Luminance	0.0230 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B5E #465E1B

analogous

#1B245E #331B5E #541B5E

triadic

#331B5E #5E331B #1B5E33

tetradic

#331B5E #5E1B24 #465E1B #1B5E54

square

#331B5E #5E1B24 #465E1B #1B5E54

split-complementary

#331B5E #5E541B #245E1B

monochromatic

#0D0718 #190D2E #331B5E #4D298E #6736BD

Accessibility & contrast

On white

14.39

#331B5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#331B5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B5E

14.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B5E	#FFFFFF	#000000	##FFFFFF
##331B5E	1.00	14.39	1.46	14.39
#FFFFFF	14.39	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A60

Deuteranopia (green-blind)

#00295D

Tritanopia (blue-blind)

#272B3A

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #331b5e;
/* rgb */ color: rgb(51, 27, 94);
/* oklch */ color: oklch(29.7% 0.113 295.0);

Tailwind

colors: {
  custom: {
    50: '#6f598c',
    500: '#331b5e',
    950: '#000000',
  },
}

SCSS

$custom: #331b5e;
$custom-light: #6f598c;
$custom-dark: #000000;

JSON

{
  "hex": "#331b5e",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 94
  },
  "hsl": {
    "h": 261.493,
    "s": 55.372,
    "l": 23.725
  },
  "oklch": {
    "l": 0.29664,
    "c": 0.11298,
    "h": 295
  },
  "luminance": 0.02296
}

Semantic roles & 50–950 ramp

primary

#331B5E

secondary

#769441

accent

#DF49A9

background

#F6F5F8

surface

#ECE9F0

border

#C7C5CB

text

#08030C

muted

#7B787D

Preview Lab

Preview with #331B5E

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

Preview Lab → · Contrast checker → · Palette generator →