#331D6B#331D6B

#331D6B is a dark, vivid violet. Relative luminance 0.026; OKLCH L 31.2% C 0.128 H 289.9°. Best body text is #FFFFFF at 13.74:1 contrast (WCAG AA passes).

Color values

HEX	#331D6B
RGB	rgb(51, 29, 107)
HSL	hsl(257, 57%, 27%)
HSV	hsv(257, 73%, 42%)
CMYK	cmyk(52.3%, 72.9%, 0%, 58%)
CIE-LAB	lab(18.56, 31.36, -41.80)
CIE-LCH	lch(18.56, 52.26, 306.88°)
OKLab	oklab(31.16% 0.0434 -0.1199)
OKLCH	oklch(31.16% 0.128 289.9)
XYZ	xyz(4.4577, 2.6439, 14.1825)
Luminance	0.0264 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331D6B #556B1D

analogous

#1D2E6B #331D6B #5A1D6B

triadic

#331D6B #6B331D #1D6B33

tetradic

#331D6B #6B1D2E #556B1D #1D6B5A

square

#331D6B #6B1D2E #556B1D #1D6B5A

split-complementary

#331D6B #6B5A1D #2E6B1D

monochromatic

#0B0718 #1C103B #331D6B #4A2A9B #6239C9

Accessibility & contrast

On white

13.74

#331D6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#331D6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331D6B

13.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331D6B	#FFFFFF	#000000	##FFFFFF
##331D6B	1.00	13.74	1.53	13.74
#FFFFFF	13.74	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F6D

Deuteranopia (green-blind)

#002B69

Tritanopia (blue-blind)

#203141

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #331d6b;
/* rgb */ color: rgb(51, 29, 107);
/* oklch */ color: oklch(31.2% 0.128 289.9);

Tailwind

colors: {
  custom: {
    50: '#715b96',
    500: '#331d6b',
    950: '#000000',
  },
}

SCSS

$custom: #331d6b;
$custom-light: #715b96;
$custom-dark: #000000;

JSON

{
  "hex": "#331d6b",
  "rgb": {
    "r": 51,
    "g": 29,
    "b": 107
  },
  "hsl": {
    "h": 256.923,
    "s": 57.353,
    "l": 26.667
  },
  "oklch": {
    "l": 0.31163,
    "c": 0.12752,
    "h": 289.9
  },
  "luminance": 0.02644
}

Semantic roles & 50–950 ramp

primary

#331D6B

secondary

#86A044

accent

#E147B5

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#08040D

muted

#7B797E

Preview Lab

Preview with #331D6B

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

Preview Lab → · Contrast checker → · Palette generator →