#311C88#311C88

#311C88 is a dark, vivid violet. Relative luminance 0.033; OKLCH L 33.8% C 0.166 H 281.8°. Best body text is #FFFFFF at 12.71:1 contrast (WCAG AA passes).

Color values

HEX	#311C88
RGB	rgb(49, 28, 136)
HSL	hsl(252, 66%, 32%)
HSV	hsv(252, 79%, 53%)
CMYK	cmyk(64%, 79.4%, 0%, 46.7%)
CIE-LAB	lab(21.06, 40.72, -56.23)
CIE-LCH	lch(21.06, 69.43, 305.91°)
OKLab	oklab(33.76% 0.0338 -0.1622)
OKLCH	oklch(33.76% 0.166 281.8)
XYZ	xyz(6.1244, 3.2606, 23.5944)
Luminance	0.0326 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311C88 #73881C

analogous

#1C3D88 #311C88 #671C88

triadic

#311C88 #88311C #1C8831

tetradic

#311C88 #881C3D #73881C #1C8867

square

#311C88 #881C3D #73881C #1C8867

split-complementary

#311C88 #88671C #3D881C

monochromatic

#0C0722 #1F1255 #311C88 #4326BB #6246D9

Accessibility & contrast

On white

12.71

#311C88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#311C88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311C88

12.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311C88	#FFFFFF	#000000	##FFFFFF
##311C88	1.00	12.71	1.65	12.71
#FFFFFF	12.71	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368B

Deuteranopia (green-blind)

#002F86

Tritanopia (blue-blind)

#003C51

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #311c88;
/* rgb */ color: rgb(49, 28, 136);
/* oklch */ color: oklch(33.8% 0.166 281.8);

Tailwind

colors: {
  custom: {
    50: '#755cac',
    500: '#311c88',
    950: '#000000',
  },
}

SCSS

$custom: #311c88;
$custom-light: #755cac;
$custom-dark: #000000;

JSON

{
  "hex": "#311c88",
  "rgb": {
    "r": 49,
    "g": 28,
    "b": 136
  },
  "hsl": {
    "h": 251.667,
    "s": 65.854,
    "l": 32.157
  },
  "oklch": {
    "l": 0.33762,
    "c": 0.16571,
    "h": 281.8
  },
  "luminance": 0.03261
}

Semantic roles & 50–950 ramp

primary

#311C88

secondary

#A4BA45

accent

#E93FC8

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #311C88

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

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