#331B6D#331B6D

#331B6D is a dark, vivid violet. Relative luminance 0.026; OKLCH L 31.1% C 0.133 H 289.8°. Best body text is #FFFFFF at 13.83:1 contrast (WCAG AA passes).

Color values

HEX	#331B6D
RGB	rgb(51, 27, 109)
HSL	hsl(258, 60%, 27%)
HSV	hsv(258, 75%, 43%)
CMYK	cmyk(53.2%, 75.2%, 0%, 57.3%)
CIE-LAB	lab(18.33, 33.14, -43.48)
CIE-LCH	lch(18.33, 54.67, 307.32°)
OKLab	oklab(31.06% 0.0449 -0.1248)
OKLCH	oklch(31.06% 0.133 289.8)
XYZ	xyz(4.5167, 2.5916, 14.7273)
Luminance	0.0259 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B6D #556D1B

analogous

#1B2C6D #331B6D #5C1B6D

triadic

#331B6D #6D331B #1B6D33

tetradic

#331B6D #6D1B2C #556D1B #1B6D5C

square

#331B6D #6D1B2C #556D1B #1B6D5C

split-complementary

#331B6D #6D5C1B #2C6D1B

monochromatic

#0B0619 #1C0F3C #331B6D #4A279E #6235CD

Accessibility & contrast

On white

13.83

#331B6D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#331B6D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B6D

13.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B6D	#FFFFFF	#000000	##FFFFFF
##331B6D	1.00	13.83	1.52	13.83
#FFFFFF	13.83	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E6F

Deuteranopia (green-blind)

#002B6B

Tritanopia (blue-blind)

#1F3142

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #331b6d;
/* rgb */ color: rgb(51, 27, 109);
/* oklch */ color: oklch(31.1% 0.133 289.8);

Tailwind

colors: {
  custom: {
    50: '#715a98',
    500: '#331b6d',
    950: '#000000',
  },
}

SCSS

$custom: #331b6d;
$custom-light: #715a98;
$custom-dark: #000000;

JSON

{
  "hex": "#331b6d",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 109
  },
  "hsl": {
    "h": 257.561,
    "s": 60.294,
    "l": 26.667
  },
  "oklch": {
    "l": 0.31057,
    "c": 0.13268,
    "h": 289.8
  },
  "luminance": 0.02592
}

Semantic roles & 50–950 ramp

primary

#331B6D

secondary

#86A242

accent

#E344B5

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#08040E

muted

#7B797E

Preview Lab

Preview with #331B6D

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

Preview Lab → · Contrast checker → · Palette generator →