#311B63#311B63

#311B63 is a dark, moderate violet. Relative luminance 0.023; OKLCH L 29.9% C 0.120 H 291.5°. Best body text is #FFFFFF at 14.31:1 contrast (WCAG AA passes).

Color values

HEX	#311B63
RGB	rgb(49, 27, 99)
HSL	hsl(258, 57%, 25%)
HSV	hsv(258, 73%, 39%)
CMYK	cmyk(50.5%, 72.7%, 0%, 61.2%)
CIE-LAB	lab(17.17, 29.64, -38.83)
CIE-LCH	lch(17.17, 48.85, 307.36°)
OKLab	oklab(29.89% 0.0438 -0.1113)
OKLCH	oklch(29.89% 0.12 291.5)
XYZ	xyz(3.9101, 2.3375, 12.0471)
Luminance	0.0234 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311B63 #4D631B

analogous

#1B2963 #311B63 #551B63

triadic

#311B63 #63311B #1B6331

tetradic

#311B63 #631B29 #4D631B #1B6355

square

#311B63 #631B29 #4D631B #1B6355

split-complementary

#311B63 #63551B #29631B

monochromatic

#0C0718 #190E33 #311B63 #492893 #6135C3

Accessibility & contrast

On white

14.31

#311B63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#311B63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311B63

14.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311B63	#FFFFFF	#000000	##FFFFFF
##311B63	1.00	14.31	1.47	14.31
#FFFFFF	14.31	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B65

Deuteranopia (green-blind)

#002962

Tritanopia (blue-blind)

#212D3C

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #311b63;
/* rgb */ color: rgb(49, 27, 99);
/* oklch */ color: oklch(29.9% 0.120 291.5);

Tailwind

colors: {
  custom: {
    50: '#6f5990',
    500: '#311b63',
    950: '#000000',
  },
}

SCSS

$custom: #311b63;
$custom-light: #6f5990;
$custom-dark: #000000;

JSON

{
  "hex": "#311b63",
  "rgb": {
    "r": 49,
    "g": 27,
    "b": 99
  },
  "hsl": {
    "h": 258.333,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.29888,
    "c": 0.11958,
    "h": 291.5
  },
  "luminance": 0.02338
}

Semantic roles & 50–950 ramp

primary

#311B63

secondary

#7E9841

accent

#E047B2

background

#F6F5F8

surface

#ECE9F0

border

#C7C5CB

text

#08030D

muted

#7B787D

Preview Lab

Preview with #311B63

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

Preview Lab → · Contrast checker → · Palette generator →