#311F88#311F88

#311F88 is a dark, vivid violet. Relative luminance 0.034; OKLCH L 34.2% C 0.163 H 281.3°. Best body text is #FFFFFF at 12.48:1 contrast (WCAG AA passes).

Color values

HEX	#311F88
RGB	rgb(49, 31, 136)
HSL	hsl(250, 63%, 33%)
HSV	hsv(250, 77%, 53%)
CMYK	cmyk(64%, 77.2%, 0%, 46.7%)
CIE-LAB	lab(21.62, 39.12, -55.31)
CIE-LCH	lch(21.62, 67.75, 305.27°)
OKLab	oklab(34.15% 0.0318 -0.1596)
OKLCH	oklch(34.15% 0.163 281.3)
XYZ	xyz(6.1991, 3.4101, 23.6193)
Luminance	0.0341 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311F88 #76881F

analogous

#1F4188 #311F88 #661F88

triadic

#311F88 #88311F #1F8831

tetradic

#311F88 #881F41 #76881F #1F8866

square

#311F88 #881F41 #76881F #1F8866

split-complementary

#311F88 #88661F #41881F

monochromatic

#0D0824 #1F1456 #311F88 #432ABA #634BD6

Accessibility & contrast

On white

12.48

#311F88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#311F88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311F88

12.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311F88	#FFFFFF	#000000	##FFFFFF
##311F88	1.00	12.48	1.68	12.48
#FFFFFF	12.48	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378B

Deuteranopia (green-blind)

#003086

Tritanopia (blue-blind)

#003D52

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #311f88;
/* rgb */ color: rgb(49, 31, 136);
/* oklch */ color: oklch(34.2% 0.163 281.3);

Tailwind

colors: {
  custom: {
    50: '#755dac',
    500: '#311f88',
    950: '#000000',
  },
}

SCSS

$custom: #311f88;
$custom-light: #755dac;
$custom-dark: #000000;

JSON

{
  "hex": "#311f88",
  "rgb": {
    "r": 49,
    "g": 31,
    "b": 136
  },
  "hsl": {
    "h": 250.286,
    "s": 62.874,
    "l": 32.745
  },
  "oklch": {
    "l": 0.34153,
    "c": 0.16271,
    "h": 281.3
  },
  "luminance": 0.03411
}

Semantic roles & 50–950 ramp

primary

#311F88

secondary

#A6B94A

accent

#E642CA

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #311F88

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

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