#311B8A#311B8A

#311B8A is a dark, vivid violet. Relative luminance 0.033; OKLCH L 33.9% C 0.169 H 281.5°. Best body text is #FFFFFF at 12.69:1 contrast (WCAG AA passes).

Color values

HEX	#311B8A
RGB	rgb(49, 27, 138)
HSL	hsl(252, 67%, 32%)
HSV	hsv(252, 80%, 54%)
CMYK	cmyk(64.5%, 80.4%, 0%, 45.9%)
CIE-LAB	lab(21.10, 41.85, -57.42)
CIE-LCH	lch(21.10, 71.05, 306.08°)
OKLab	oklab(33.86% 0.0338 -0.1657)
OKLCH	oklch(33.86% 0.169 281.5)
XYZ	xyz(6.2446, 3.2713, 24.3422)
Luminance	0.0327 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311B8A #748A1B

analogous

#1B3C8A #311B8A #691B8A

triadic

#311B8A #8A311B #1B8A31

tetradic

#311B8A #8A1B3C #748A1B #1B8A69

square

#311B8A #8A1B3C #748A1B #1B8A69

split-complementary

#311B8A #8A691B #3C8A1B

monochromatic

#0D0724 #1F1157 #311B8A #4325BD #6345DB

Accessibility & contrast

On white

12.69

#311B8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#311B8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311B8A

12.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311B8A	#FFFFFF	#000000	##FFFFFF
##311B8A	1.00	12.69	1.65	12.69
#FFFFFF	12.69	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368D

Deuteranopia (green-blind)

#002F88

Tritanopia (blue-blind)

#003C52

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #311b8a;
/* rgb */ color: rgb(49, 27, 138);
/* oklch */ color: oklch(33.9% 0.169 281.5);

Tailwind

colors: {
  custom: {
    50: '#765bad',
    500: '#311b8a',
    950: '#000000',
  },
}

SCSS

$custom: #311b8a;
$custom-light: #765bad;
$custom-dark: #000000;

JSON

{
  "hex": "#311b8a",
  "rgb": {
    "r": 49,
    "g": 27,
    "b": 138
  },
  "hsl": {
    "h": 251.892,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.33855,
    "c": 0.16908,
    "h": 281.5
  },
  "luminance": 0.03272
}

Semantic roles & 50–950 ramp

primary

#311B8A

secondary

#A4BC45

accent

#EA3EC8

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#0A0410

muted

#7C797F

Preview Lab

Preview with #311B8A

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

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