#311D79#311D79

#311D79 is a dark, vivid violet. Relative luminance 0.029; OKLCH L 32.3% C 0.146 H 284.7°. Best body text is #FFFFFF at 13.27:1 contrast (WCAG AA passes).

Color values

HEX	#311D79
RGB	rgb(49, 29, 121)
HSL	hsl(253, 61%, 29%)
HSV	hsv(253, 76%, 47%)
CMYK	cmyk(59.5%, 76%, 0%, 52.5%)
CIE-LAB	lab(19.69, 35.45, -48.99)
CIE-LCH	lch(19.69, 60.48, 305.89°)
OKLab	oklab(32.33% 0.0371 -0.1411)
OKLCH	oklch(32.33% 0.146 284.7)
XYZ	xyz(5.1561, 2.9119, 18.3758)
Luminance	0.0291 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311D79 #65791D

analogous

#1D3779 #311D79 #5F1D79

triadic

#311D79 #79311D #1D7931

tetradic

#311D79 #791D37 #65791D #1D795F

square

#311D79 #791D37 #65791D #1D795F

split-complementary

#311D79 #795F1D #37791D

monochromatic

#0A0619 #1D1148 #311D79 #4529AA #5F3FD1

Accessibility & contrast

On white

13.27

#311D79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#311D79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311D79

13.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311D79	#FFFFFF	#000000	##FFFFFF
##311D79	1.00	13.27	1.58	13.27
#FFFFFF	13.27	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00327C

Deuteranopia (green-blind)

#002D77

Tritanopia (blue-blind)

#0B3649

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #311d79;
/* rgb */ color: rgb(49, 29, 121);
/* oklch */ color: oklch(32.3% 0.146 284.7);

Tailwind

colors: {
  custom: {
    50: '#725ba1',
    500: '#311d79',
    950: '#000000',
  },
}

SCSS

$custom: #311d79;
$custom-light: #725ba1;
$custom-dark: #000000;

JSON

{
  "hex": "#311d79",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 121
  },
  "hsl": {
    "h": 253.043,
    "s": 61.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.32328,
    "c": 0.14588,
    "h": 284.7
  },
  "luminance": 0.02912
}

Semantic roles & 50–950 ramp

primary

#311D79

secondary

#96AD45

accent

#E443C1

background

#F7F5FA

surface

#EDE9F3

border

#C8C5CD

text

#09040F

muted

#7B797F

Preview Lab

Preview with #311D79

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

Preview Lab → · Contrast checker → · Palette generator →