#311B85#311B85

#311B85 is a dark, vivid violet. Relative luminance 0.031; OKLCH L 33.3% C 0.163 H 282.5°. Best body text is #FFFFFF at 12.92:1 contrast (WCAG AA passes).

Color values

HEX	#311B85
RGB	rgb(49, 27, 133)
HSL	hsl(252, 66%, 31%)
HSV	hsv(252, 80%, 52%)
CMYK	cmyk(63.2%, 79.7%, 0%, 47.8%)
CIE-LAB	lab(20.56, 40.30, -55.18)
CIE-LCH	lch(20.56, 68.33, 306.14°)
OKLab	oklab(33.32% 0.0353 -0.1591)
OKLCH	oklch(33.32% 0.163 282.5)
XYZ	xyz(5.8909, 3.1299, 22.4795)
Luminance	0.0313 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311B85 #6F851B

analogous

#1B3A85 #311B85 #661B85

triadic

#311B85 #85311B #1B8531

tetradic

#311B85 #851B3A #6F851B #1B8566

square

#311B85 #851B3A #6F851B #1B8566

split-complementary

#311B85 #85661B #3A851B

monochromatic

#0C061F #1E1152 #311B85 #4425B8 #6142D9

Accessibility & contrast

On white

12.92

#311B85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#311B85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311B85

12.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311B85	#FFFFFF	#000000	##FFFFFF
##311B85	1.00	12.92	1.63	12.92
#FFFFFF	12.92	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003588

Deuteranopia (green-blind)

#002E83

Tritanopia (blue-blind)

#003A4F

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #311b85;
/* rgb */ color: rgb(49, 27, 133);
/* oklch */ color: oklch(33.3% 0.163 282.5);

Tailwind

colors: {
  custom: {
    50: '#755baa',
    500: '#311b85',
    950: '#000000',
  },
}

SCSS

$custom: #311b85;
$custom-light: #755baa;
$custom-dark: #000000;

JSON

{
  "hex": "#311b85",
  "rgb": {
    "r": 49,
    "g": 27,
    "b": 133
  },
  "hsl": {
    "h": 252.453,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.33315,
    "c": 0.163,
    "h": 282.5
  },
  "luminance": 0.0313
}

Semantic roles & 50–950 ramp

primary

#311B85

secondary

#A0B844

accent

#E93FC6

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #311B85

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

Preview Lab → · Contrast checker → · Palette generator →