#311C99#311C99

#311C99 is a dark, vivid violet. Relative luminance 0.038; OKLCH L 35.6% C 0.186 H 278.9°. Best body text is #FFFFFF at 11.95:1 contrast (WCAG AA passes).

Color values

HEX	#311C99
RGB	rgb(49, 28, 153)
HSL	hsl(250, 69%, 35%)
HSV	hsv(250, 82%, 60%)
CMYK	cmyk(68%, 81.7%, 0%, 40%)
CIE-LAB	lab(22.94, 45.94, -63.68)
CIE-LCH	lch(22.94, 78.52, 305.81°)
OKLab	oklab(35.63% 0.0287 -0.1839)
OKLCH	oklch(35.63% 0.186 278.9)
XYZ	xyz(7.4298, 3.7828, 30.4694)
Luminance	0.0378 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311C99 #84991C

analogous

#1C4599 #311C99 #6F1C99

triadic

#311C99 #99311C #1C9931

tetradic

#311C99 #991C45 #84991C #1C996F

square

#311C99 #991C45 #84991C #1C996F

split-complementary

#311C99 #996F1C #45991C

monochromatic

#100932 #201365 #311C99 #4225CD #6850DF

Accessibility & contrast

On white

11.95

#311C99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#311C99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311C99

11.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311C99	#FFFFFF	#000000	##FFFFFF
##311C99	1.00	11.95	1.76	11.95
#FFFFFF	11.95	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B9C

Deuteranopia (green-blind)

#003297

Tritanopia (blue-blind)

#00435B

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #311c99;
/* rgb */ color: rgb(49, 28, 153);
/* oklch */ color: oklch(35.6% 0.186 278.9);

Tailwind

colors: {
  custom: {
    50: '#795db8',
    500: '#311c99',
    950: '#000000',
  },
}

SCSS

$custom: #311c99;
$custom-light: #795db8;
$custom-dark: #000000;

JSON

{
  "hex": "#311c99",
  "rgb": {
    "r": 49,
    "g": 28,
    "b": 153
  },
  "hsl": {
    "h": 250.08,
    "s": 69.061,
    "l": 35.49
  },
  "oklch": {
    "l": 0.35628,
    "c": 0.18614,
    "h": 278.9
  },
  "luminance": 0.03783
}

Semantic roles & 50–950 ramp

primary

#311C99

secondary

#AEC24F

accent

#EC3CCE

background

#F8F5FB

surface

#EFE9F6

border

#CAC5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #311C99

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

Preview Lab → · Contrast checker → · Palette generator →