#331B57#331B57

#331B57 is a dark, moderate violet. Relative luminance 0.022; OKLCH L 29.1% C 0.104 H 298.1°. Best body text is #FFFFFF at 14.63:1 contrast (WCAG AA passes).

Color values

HEX	#331B57
RGB	rgb(51, 27, 87)
HSL	hsl(264, 53%, 22%)
HSV	hsv(264, 69%, 34%)
CMYK	cmyk(41.4%, 69%, 0%, 65.9%)
CIE-LAB	lab(16.38, 26.40, -32.09)
CIE-LCH	lch(16.38, 41.55, 309.44°)
OKLab	oklab(29.06% 0.0487 -0.0914)
OKLCH	oklch(29.06% 0.104 298.1)
XYZ	xyz(3.4770, 2.1757, 9.2517)
Luminance	0.0218 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B57 #3F571B

analogous

#1B2157 #331B57 #511B57

triadic

#331B57 #57331B #1B5733

tetradic

#331B57 #571B21 #3F571B #1B5751

square

#331B57 #571B21 #3F571B #1B5751

split-complementary

#331B57 #57511B #21571B

monochromatic

#0E0717 #180D28 #331B57 #4E2986 #6A38B4

Accessibility & contrast

On white

14.63

#331B57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#331B57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B57

14.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B57	#FFFFFF	#000000	##FFFFFF
##331B57	1.00	14.63	1.44	14.63
#FFFFFF	14.63	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002959

Deuteranopia (green-blind)

#002856

Tritanopia (blue-blind)

#2B2836

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #331b57;
/* rgb */ color: rgb(51, 27, 87);
/* oklch */ color: oklch(29.1% 0.104 298.1);

Tailwind

colors: {
  custom: {
    50: '#6e5987',
    500: '#331b57',
    950: '#000000',
  },
}

SCSS

$custom: #331b57;
$custom-light: #6e5987;
$custom-dark: #000000;

JSON

{
  "hex": "#331b57",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 87
  },
  "hsl": {
    "h": 264,
    "s": 52.632,
    "l": 22.353
  },
  "oklch": {
    "l": 0.29058,
    "c": 0.10354,
    "h": 298.1
  },
  "luminance": 0.02176
}

Semantic roles & 50–950 ramp

primary

#331B57

secondary

#6E8D41

accent

#DC4CA2

background

#F6F5F8

surface

#ECE9EF

border

#C7C5CA

text

#07030B

muted

#7A787C

Preview Lab

Preview with #331B57

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

Preview Lab → · Contrast checker → · Palette generator →