#331F66#331F66

#331F66 is a dark, moderate violet. Relative luminance 0.026; OKLCH L 31.0% C 0.118 H 290.8°. Best body text is #FFFFFF at 13.74:1 contrast (WCAG AA passes).

Color values

HEX	#331F66
RGB	rgb(51, 31, 102)
HSL	hsl(257, 53%, 26%)
HSV	hsv(257, 70%, 40%)
CMYK	cmyk(50%, 69.6%, 0%, 60%)
CIE-LAB	lab(18.55, 28.57, -38.54)
CIE-LCH	lch(18.55, 47.97, 306.55°)
OKLab	oklab(31.02% 0.042 -0.1103)
OKLCH	oklch(31.02% 0.118 290.8)
XYZ	xyz(4.2528, 2.6429, 12.8539)
Luminance	0.0264 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331F66 #52661F

analogous

#1F2E66 #331F66 #561F66

triadic

#331F66 #66331F #1F6633

tetradic

#331F66 #661F2E #52661F #1F6656

square

#331F66 #661F2E #52661F #1F6656

split-complementary

#331F66 #66561F #2E661F

monochromatic

#0C0717 #1C1137 #331F66 #4A2D95 #623CC4

Accessibility & contrast

On white

13.74

#331F66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#331F66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331F66

13.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331F66	#FFFFFF	#000000	##FFFFFF
##331F66	1.00	13.74	1.53	13.74
#FFFFFF	13.74	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E68

Deuteranopia (green-blind)

#002C65

Tritanopia (blue-blind)

#23303F

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #331f66;
/* rgb */ color: rgb(51, 31, 102);
/* oklch */ color: oklch(31.0% 0.118 290.8);

Tailwind

colors: {
  custom: {
    50: '#705c92',
    500: '#331f66',
    950: '#000000',
  },
}

SCSS

$custom: #331f66;
$custom-light: #705c92;
$custom-dark: #000000;

JSON

{
  "hex": "#331f66",
  "rgb": {
    "r": 51,
    "g": 31,
    "b": 102
  },
  "hsl": {
    "h": 256.901,
    "s": 53.383,
    "l": 26.078
  },
  "oklch": {
    "l": 0.31021,
    "c": 0.11806,
    "h": 290.8
  },
  "luminance": 0.02643
}

Semantic roles & 50–950 ramp

primary

#331F66

secondary

#839A46

accent

#DD4BB4

background

#F7F5F9

surface

#EDE9F1

border

#C8C5CB

text

#08040D

muted

#7B797E

Preview Lab

Preview with #331F66

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

Preview Lab → · Contrast checker → · Palette generator →