#311D91#311D91

#311D91 is a dark, vivid violet. Relative luminance 0.036; OKLCH L 34.9% C 0.176 H 280.0°. Best body text is #FFFFFF at 12.24:1 contrast (WCAG AA passes).

Color values

HEX	#311D91
RGB	rgb(49, 29, 145)
HSL	hsl(250, 67%, 34%)
HSV	hsv(250, 80%, 57%)
CMYK	cmyk(66.2%, 80%, 0%, 43.1%)
CIE-LAB	lab(22.22, 43.00, -59.94)
CIE-LCH	lch(22.22, 73.77, 305.66°)
OKLab	oklab(34.86% 0.0306 -0.173)
OKLCH	oklch(34.86% 0.176 280)
XYZ	xyz(6.8152, 3.5755, 27.1136)
Luminance	0.0358 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311D91 #7D911D

analogous

#1D4391 #311D91 #6B1D91

triadic

#311D91 #91311D #1D9131

tetradic

#311D91 #911D43 #7D911D #1D916B

square

#311D91 #911D43 #7D911D #1D916B

split-complementary

#311D91 #916B1D #43911D

monochromatic

#0F092B #20135E #311D91 #4227C4 #664DDB

Accessibility & contrast

On white

12.24

#311D91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#311D91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311D91

12.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311D91	#FFFFFF	#000000	##FFFFFF
##311D91	1.00	12.24	1.72	12.24
#FFFFFF	12.24	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003994

Deuteranopia (green-blind)

#00318F

Tritanopia (blue-blind)

#004057

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #311d91;
/* rgb */ color: rgb(49, 29, 145);
/* oklch */ color: oklch(34.9% 0.176 280.0);

Tailwind

colors: {
  custom: {
    50: '#775db2',
    500: '#311d91',
    950: '#000000',
  },
}

SCSS

$custom: #311d91;
$custom-light: #775db2;
$custom-dark: #000000;

JSON

{
  "hex": "#311d91",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 145
  },
  "hsl": {
    "h": 250.345,
    "s": 66.667,
    "l": 34.118
  },
  "oklch": {
    "l": 0.34861,
    "c": 0.17571,
    "h": 280
  },
  "luminance": 0.03576
}

Semantic roles & 50–950 ramp

primary

#311D91

secondary

#AABE4C

accent

#EA3ECC

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #311D91

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

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