#311D64#311D64

#311D64 is a dark, moderate violet. Relative luminance 0.025; OKLCH L 30.3% C 0.118 H 290.5°. Best body text is #FFFFFF at 14.09:1 contrast (WCAG AA passes).

Color values

HEX	#311D64
RGB	rgb(49, 29, 100)
HSL	hsl(257, 55%, 25%)
HSV	hsv(257, 71%, 39%)
CMYK	cmyk(51%, 71%, 0%, 60.8%)
CIE-LAB	lab(17.70, 28.75, -38.62)
CIE-LCH	lch(17.70, 48.15, 306.66°)
OKLab	oklab(30.3% 0.0414 -0.1107)
OKLCH	oklch(30.3% 0.118 290.5)
XYZ	xyz(4.0056, 2.4516, 12.3163)
Luminance	0.0245 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311D64 #50641D

analogous

#1D2D64 #311D64 #541D64

triadic

#311D64 #64311D #1D6431

tetradic

#311D64 #641D2D #50641D #1D6454

square

#311D64 #641D2D #50641D #1D6454

split-complementary

#311D64 #64541D #2D641D

monochromatic

#0C0718 #1A0F35 #311D64 #482B93 #5F39C3

Accessibility & contrast

On white

14.09

#311D64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#311D64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311D64

14.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311D64	#FFFFFF	#000000	##FFFFFF
##311D64	1.00	14.09	1.49	14.09
#FFFFFF	14.09	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D66

Deuteranopia (green-blind)

#002A63

Tritanopia (blue-blind)

#212E3D

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #311d64;
/* rgb */ color: rgb(49, 29, 100);
/* oklch */ color: oklch(30.3% 0.118 290.5);

Tailwind

colors: {
  custom: {
    50: '#6e5a91',
    500: '#311d64',
    950: '#000000',
  },
}

SCSS

$custom: #311d64;
$custom-light: #6e5a91;
$custom-dark: #000000;

JSON

{
  "hex": "#311d64",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 100
  },
  "hsl": {
    "h": 256.901,
    "s": 55.039,
    "l": 25.294
  },
  "oklch": {
    "l": 0.30297,
    "c": 0.11816,
    "h": 290.5
  },
  "luminance": 0.02452
}

Semantic roles & 50–950 ramp

primary

#311D64

secondary

#819944

accent

#DE49B4

background

#F6F5F8

surface

#ECE9F0

border

#C7C5CB

text

#08040D

muted

#7B797D

Preview Lab

Preview with #311D64

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

Preview Lab → · Contrast checker → · Palette generator →