#311D69#311D69

#311D69 is a dark, vivid violet. Relative luminance 0.026; OKLCH L 30.8% C 0.125 H 289.0°. Best body text is #FFFFFF at 13.90:1 contrast (WCAG AA passes).

Color values

HEX	#311D69
RGB	rgb(49, 29, 105)
HSL	hsl(256, 57%, 26%)
HSV	hsv(256, 72%, 41%)
CMYK	cmyk(53.3%, 72.4%, 0%, 58.8%)
CIE-LAB	lab(18.15, 30.34, -41.17)
CIE-LCH	lch(18.15, 51.14, 306.39°)
OKLab	oklab(30.76% 0.0406 -0.1181)
OKLCH	oklch(30.76% 0.125 289)
XYZ	xyz(4.2551, 2.5514, 13.6301)
Luminance	0.0255 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

#4B006E

ΔE00 7.17

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311D69 #55691D

analogous

#1D2F69 #311D69 #571D69

triadic

#311D69 #69311D #1D6931

tetradic

#311D69 #691D2F #55691D #1D6957

square

#311D69 #691D2F #55691D #1D6957

split-complementary

#311D69 #69571D #2F691D

monochromatic

#0B0718 #1B1039 #311D69 #472A99 #5E38C8

Accessibility & contrast

On white

13.90

#311D69 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#311D69 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311D69

13.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311D69	#FFFFFF	#000000	##FFFFFF
##311D69	1.00	13.90	1.51	13.90
#FFFFFF	13.90	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E6B

Deuteranopia (green-blind)

#002A68

Tritanopia (blue-blind)

#1D3040

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #311d69;
/* rgb */ color: rgb(49, 29, 105);
/* oklch */ color: oklch(30.8% 0.125 289.0);

Tailwind

colors: {
  custom: {
    50: '#6f5b95',
    500: '#311d69',
    950: '#000000',
  },
}

SCSS

$custom: #311d69;
$custom-light: #6f5b95;
$custom-dark: #000000;

JSON

{
  "hex": "#311d69",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 105
  },
  "hsl": {
    "h": 255.789,
    "s": 56.716,
    "l": 26.275
  },
  "oklch": {
    "l": 0.30761,
    "c": 0.12492,
    "h": 289
  },
  "luminance": 0.02552
}

Semantic roles & 50–950 ramp

primary

#311D69

secondary

#869E44

accent

#E048B8

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#08040D

muted

#7B797E

Preview Lab

Preview with #311D69

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

Preview Lab → · Contrast checker → · Palette generator →