#311F82#311F82

#311F82 is a dark, vivid violet. Relative luminance 0.032; OKLCH L 33.5% C 0.155 H 282.4°. Best body text is #FFFFFF at 12.73:1 contrast (WCAG AA passes).

Color values

HEX	#311F82
RGB	rgb(49, 31, 130)
HSL	hsl(251, 61%, 32%)
HSV	hsv(251, 76%, 51%)
CMYK	cmyk(62.3%, 76.2%, 0%, 49%)
CIE-LAB	lab(21.00, 37.21, -52.56)
CIE-LCH	lch(21.00, 64.40, 305.29°)
OKLab	oklab(33.53% 0.0333 -0.1515)
OKLCH	oklch(33.53% 0.155 282.4)
XYZ	xyz(5.7846, 3.2442, 21.4361)
Luminance	0.0324 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311F82 #70821F

analogous

#1F3F82 #311F82 #631F82

triadic

#311F82 #82311F #1F8231

tetradic

#311F82 #821F3F #70821F #1F8263

square

#311F82 #821F3F #70821F #1F8263

split-complementary

#311F82 #82631F #3F821F

monochromatic

#0C071F #1E1351 #311F82 #442BB3 #6148D3

Accessibility & contrast

On white

12.73

#311F82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#311F82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311F82

12.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311F82	#FFFFFF	#000000	##FFFFFF
##311F82	1.00	12.73	1.65	12.73
#FFFFFF	12.73	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003685

Deuteranopia (green-blind)

#002F80

Tritanopia (blue-blind)

#003B4F

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #311f82;
/* rgb */ color: rgb(49, 31, 130);
/* oklch */ color: oklch(33.5% 0.155 282.4);

Tailwind

colors: {
  custom: {
    50: '#745da7',
    500: '#311f82',
    950: '#000000',
  },
}

SCSS

$custom: #311f82;
$custom-light: #745da7;
$custom-dark: #000000;

JSON

{
  "hex": "#311f82",
  "rgb": {
    "r": 49,
    "g": 31,
    "b": 130
  },
  "hsl": {
    "h": 250.909,
    "s": 61.491,
    "l": 31.569
  },
  "oklch": {
    "l": 0.33529,
    "c": 0.15515,
    "h": 282.4
  },
  "luminance": 0.03245
}

Semantic roles & 50–950 ramp

primary

#311F82

secondary

#A1B548

accent

#E543C7

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #311F82

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

Preview Lab → · Contrast checker → · Palette generator →