#311B83#311B83

#311B83 is a dark, vivid violet. Relative luminance 0.031; OKLCH L 33.1% C 0.161 H 282.9°. Best body text is #FFFFFF at 13.00:1 contrast (WCAG AA passes).

Color values

HEX	#311B83
RGB	rgb(49, 27, 131)
HSL	hsl(253, 66%, 31%)
HSV	hsv(253, 79%, 51%)
CMYK	cmyk(62.6%, 79.4%, 0%, 48.6%)
CIE-LAB	lab(20.34, 39.68, -54.27)
CIE-LCH	lch(20.34, 67.23, 306.17°)
OKLab	oklab(33.1% 0.0359 -0.1565)
OKLCH	oklch(33.1% 0.161 282.9)
XYZ	xyz(5.7540, 3.0751, 21.7587)
Luminance	0.0308 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311B83 #6D831B

analogous

#1B3983 #311B83 #651B83

triadic

#311B83 #83311B #1B8331

tetradic

#311B83 #831B39 #6D831B #1B8365

square

#311B83 #831B39 #6D831B #1B8365

split-complementary

#311B83 #83651B #39831B

monochromatic

#0B061E #1E1150 #311B83 #4425B6 #6141D8

Accessibility & contrast

On white

13.00

#311B83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#311B83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311B83

13.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311B83	#FFFFFF	#000000	##FFFFFF
##311B83	1.00	13.00	1.62	13.00
#FFFFFF	13.00	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	13.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003486

Deuteranopia (green-blind)

#002D81

Tritanopia (blue-blind)

#00394E

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #311b83;
/* rgb */ color: rgb(49, 27, 131);
/* oklch */ color: oklch(33.1% 0.161 282.9);

Tailwind

colors: {
  custom: {
    50: '#745ba8',
    500: '#311b83',
    950: '#000000',
  },
}

SCSS

$custom: #311b83;
$custom-light: #745ba8;
$custom-dark: #000000;

JSON

{
  "hex": "#311b83",
  "rgb": {
    "r": 49,
    "g": 27,
    "b": 131
  },
  "hsl": {
    "h": 252.692,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.33101,
    "c": 0.16055,
    "h": 282.9
  },
  "luminance": 0.03076
}

Semantic roles & 50–950 ramp

primary

#311B83

secondary

#9EB643

accent

#E93FC5

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #311B83

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

Preview Lab → · Contrast checker → · Palette generator →