#331F81#331F81

#331F81 is a dark, vivid violet. Relative luminance 0.033; OKLCH L 33.6% C 0.154 H 283.8°. Best body text is #FFFFFF at 12.70:1 contrast (WCAG AA passes).

Color values

HEX	#331F81
RGB	rgb(51, 31, 129)
HSL	hsl(252, 61%, 31%)
HSV	hsv(252, 76%, 51%)
CMYK	cmyk(60.5%, 76%, 0%, 49.4%)
CIE-LAB	lab(21.09, 37.17, -51.77)
CIE-LCH	lch(21.09, 63.73, 305.68°)
OKLab	oklab(33.61% 0.0366 -0.1491)
OKLCH	oklch(33.61% 0.154 283.8)
XYZ	xyz(5.8165, 3.2684, 21.0890)
Luminance	0.0327 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331F81 #6D811F

analogous

#1F3C81 #331F81 #641F81

triadic

#331F81 #81331F #1F8133

tetradic

#331F81 #811F3C #6D811F #1F8164

square

#331F81 #811F3C #6D811F #1F8164

split-complementary

#331F81 #81641F #3C811F

monochromatic

#0C071E #1F1350 #331F81 #472BB2 #6447D3

Accessibility & contrast

On white

12.70

#331F81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#331F81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331F81

12.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331F81	#FFFFFF	#000000	##FFFFFF
##331F81	1.00	12.70	1.65	12.70
#FFFFFF	12.70	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003684

Deuteranopia (green-blind)

#002F7F

Tritanopia (blue-blind)

#043A4E

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #331f81;
/* rgb */ color: rgb(51, 31, 129);
/* oklch */ color: oklch(33.6% 0.154 283.8);

Tailwind

colors: {
  custom: {
    50: '#755da7',
    500: '#331f81',
    950: '#000000',
  },
}

SCSS

$custom: #331f81;
$custom-light: #755da7;
$custom-dark: #000000;

JSON

{
  "hex": "#331f81",
  "rgb": {
    "r": 51,
    "g": 31,
    "b": 129
  },
  "hsl": {
    "h": 252.245,
    "s": 61.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.3361,
    "c": 0.15358,
    "h": 283.8
  },
  "luminance": 0.03269
}

Semantic roles & 50–950 ramp

primary

#331F81

secondary

#9EB448

accent

#E443C4

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#09040F

muted

#7B797F

Preview Lab

Preview with #331F81

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

Preview Lab → · Contrast checker → · Palette generator →