#331D66#331D66

#331D66 is a dark, vivid violet. Relative luminance 0.025; OKLCH L 30.7% C 0.121 H 291.5°. Best body text is #FFFFFF at 13.92:1 contrast (WCAG AA passes).

Color values

HEX	#331D66
RGB	rgb(51, 29, 102)
HSL	hsl(258, 56%, 26%)
HSV	hsv(258, 72%, 40%)
CMYK	cmyk(50%, 71.6%, 0%, 60%)
CIE-LAB	lab(18.11, 29.79, -39.27)
CIE-LCH	lch(18.11, 49.29, 307.19°)
OKLab	oklab(30.7% 0.0443 -0.1125)
OKLCH	oklch(30.7% 0.121 291.5)
XYZ	xyz(4.2022, 2.5417, 12.8370)
Luminance	0.0254 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331D66 #50661D

analogous

#1D2B66 #331D66 #571D66

triadic

#331D66 #66331D #1D6633

tetradic

#331D66 #661D2B #50661D #1D6657

square

#331D66 #661D2B #50661D #1D6657

split-complementary

#331D66 #66571D #2B661D

monochromatic

#0C0718 #1B0F36 #331D66 #4B2B96 #6338C5

Accessibility & contrast

On white

13.92

#331D66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#331D66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331D66

13.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331D66	#FFFFFF	#000000	##FFFFFF
##331D66	1.00	13.92	1.51	13.92
#FFFFFF	13.92	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D68

Deuteranopia (green-blind)

#002B65

Tritanopia (blue-blind)

#232F3F

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #331d66;
/* rgb */ color: rgb(51, 29, 102);
/* oklch */ color: oklch(30.7% 0.121 291.5);

Tailwind

colors: {
  custom: {
    50: '#705b92',
    500: '#331d66',
    950: '#000000',
  },
}

SCSS

$custom: #331d66;
$custom-light: #705b92;
$custom-dark: #000000;

JSON

{
  "hex": "#331d66",
  "rgb": {
    "r": 51,
    "g": 29,
    "b": 102
  },
  "hsl": {
    "h": 258.082,
    "s": 55.725,
    "l": 25.686
  },
  "oklch": {
    "l": 0.30699,
    "c": 0.12087,
    "h": 291.5
  },
  "luminance": 0.02542
}

Semantic roles & 50–950 ramp

primary

#331D66

secondary

#819B44

accent

#DF49B2

background

#F7F5F9

surface

#EDE9F1

border

#C8C5CB

text

#08040D

muted

#7B797E

Preview Lab

Preview with #331D66

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

Preview Lab → · Contrast checker → · Palette generator →