#331B6A#331B6A

#331B6A is a dark, vivid violet. Relative luminance 0.025; OKLCH L 30.8% C 0.129 H 290.7°. Best body text is #FFFFFF at 13.95:1 contrast (WCAG AA passes).

Color values

HEX	#331B6A
RGB	rgb(51, 27, 106)
HSL	hsl(258, 59%, 26%)
HSV	hsv(258, 75%, 42%)
CMYK	cmyk(51.9%, 74.5%, 0%, 58.4%)
CIE-LAB	lab(18.05, 32.21, -41.98)
CIE-LCH	lch(18.05, 52.92, 307.50°)
OKLab	oklab(30.77% 0.0456 -0.1204)
OKLCH	oklch(30.77% 0.129 290.7)
XYZ	xyz(4.3580, 2.5281, 13.8912)
Luminance	0.0253 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B6A #526A1B

analogous

#1B2A6A #331B6A #5A1B6A

triadic

#331B6A #6A331B #1B6A33

tetradic

#331B6A #6A1B2A #526A1B #1B6A5A

square

#331B6A #6A1B2A #526A1B #1B6A5A

split-complementary

#331B6A #6A5A1B #2A6A1B

monochromatic

#0C0618 #1C0F39 #331B6A #4A279B #6234CB

Accessibility & contrast

On white

13.95

#331B6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#331B6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B6A

13.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B6A	#FFFFFF	#000000	##FFFFFF
##331B6A	1.00	13.95	1.51	13.95
#FFFFFF	13.95	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D6C

Deuteranopia (green-blind)

#002A68

Tritanopia (blue-blind)

#212F40

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #331b6a;
/* rgb */ color: rgb(51, 27, 106);
/* oklch */ color: oklch(30.8% 0.129 290.7);

Tailwind

colors: {
  custom: {
    50: '#715a95',
    500: '#331b6a',
    950: '#000000',
  },
}

SCSS

$custom: #331b6a;
$custom-light: #715a95;
$custom-dark: #000000;

JSON

{
  "hex": "#331b6a",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 106
  },
  "hsl": {
    "h": 258.228,
    "s": 59.398,
    "l": 26.078
  },
  "oklch": {
    "l": 0.30769,
    "c": 0.1288,
    "h": 290.7
  },
  "luminance": 0.02528
}

Semantic roles & 50–950 ramp

primary

#331B6A

secondary

#839F42

accent

#E345B3

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#08040D

muted

#7B797E

Preview Lab

Preview with #331B6A

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

Preview Lab → · Contrast checker → · Palette generator →