#311D88#311D88

#311D88 is a dark, vivid violet. Relative luminance 0.033; OKLCH L 33.9% C 0.165 H 281.6°. Best body text is #FFFFFF at 12.64:1 contrast (WCAG AA passes).

Color values

HEX	#311D88
RGB	rgb(49, 29, 136)
HSL	hsl(251, 65%, 32%)
HSV	hsv(251, 79%, 53%)
CMYK	cmyk(64%, 78.7%, 0%, 46.7%)
CIE-LAB	lab(21.24, 40.20, -55.93)
CIE-LCH	lch(21.24, 68.88, 305.70°)
OKLab	oklab(33.89% 0.0331 -0.1614)
OKLCH	oklch(33.89% 0.165 281.6)
XYZ	xyz(6.1485, 3.3088, 23.6024)
Luminance	0.0331 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311D88 #74881D

analogous

#1D3F88 #311D88 #671D88

triadic

#311D88 #88311D #1D8831

tetradic

#311D88 #881D3F #74881D #1D8867

square

#311D88 #881D3F #74881D #1D8867

split-complementary

#311D88 #88671D #3F881D

monochromatic

#0D0723 #1F1256 #311D88 #4328BA #6348D8

Accessibility & contrast

On white

12.64

#311D88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#311D88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311D88

12.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311D88	#FFFFFF	#000000	##FFFFFF
##311D88	1.00	12.64	1.66	12.64
#FFFFFF	12.64	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378B

Deuteranopia (green-blind)

#002F86

Tritanopia (blue-blind)

#003C52

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #311d88;
/* rgb */ color: rgb(49, 29, 136);
/* oklch */ color: oklch(33.9% 0.165 281.6);

Tailwind

colors: {
  custom: {
    50: '#755cac',
    500: '#311d88',
    950: '#000000',
  },
}

SCSS

$custom: #311d88;
$custom-light: #755cac;
$custom-dark: #000000;

JSON

{
  "hex": "#311d88",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 136
  },
  "hsl": {
    "h": 251.215,
    "s": 64.848,
    "l": 32.353
  },
  "oklch": {
    "l": 0.33889,
    "c": 0.16473,
    "h": 281.6
  },
  "luminance": 0.03309
}

Semantic roles & 50–950 ramp

primary

#311D88

secondary

#A4BA47

accent

#E840C8

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #311D88

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

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