#331B6B#331B6B

#331B6B is a dark, vivid violet. Relative luminance 0.025; OKLCH L 30.9% C 0.130 H 290.4°. Best body text is #FFFFFF at 13.91:1 contrast (WCAG AA passes).

Color values

HEX	#331B6B
RGB	rgb(51, 27, 107)
HSL	hsl(258, 60%, 26%)
HSV	hsv(258, 75%, 42%)
CMYK	cmyk(52.3%, 74.8%, 0%, 58%)
CIE-LAB	lab(18.14, 32.52, -42.48)
CIE-LCH	lch(18.14, 53.50, 307.43°)
OKLab	oklab(30.87% 0.0454 -0.1219)
OKLCH	oklch(30.87% 0.13 290.4)
XYZ	xyz(4.4103, 2.5490, 14.1667)
Luminance	0.0255 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B6B #536B1B

analogous

#1B2B6B #331B6B #5B1B6B

triadic

#331B6B #6B331B #1B6B33

tetradic

#331B6B #6B1B2B #536B1B #1B6B5B

square

#331B6B #6B1B2B #536B1B #1B6B5B

split-complementary

#331B6B #6B5B1B #2B6B1B

monochromatic

#0C0618 #1C0F3A #331B6B #4A279C #6235CC

Accessibility & contrast

On white

13.91

#331B6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#331B6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B6B

13.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B6B	#FFFFFF	#000000	##FFFFFF
##331B6B	1.00	13.91	1.51	13.91
#FFFFFF	13.91	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E6D

Deuteranopia (green-blind)

#002A69

Tritanopia (blue-blind)

#203041

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #331b6b;
/* rgb */ color: rgb(51, 27, 107);
/* oklch */ color: oklch(30.9% 0.130 290.4);

Tailwind

colors: {
  custom: {
    50: '#715a96',
    500: '#331b6b',
    950: '#000000',
  },
}

SCSS

$custom: #331b6b;
$custom-light: #715a96;
$custom-dark: #000000;

JSON

{
  "hex": "#331b6b",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 107
  },
  "hsl": {
    "h": 258,
    "s": 59.701,
    "l": 26.275
  },
  "oklch": {
    "l": 0.30865,
    "c": 0.1301,
    "h": 290.4
  },
  "luminance": 0.02549
}

Semantic roles & 50–950 ramp

primary

#331B6B

secondary

#84A042

accent

#E345B3

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#08040D

muted

#7B797E

Preview Lab

Preview with #331B6B

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

Preview Lab → · Contrast checker → · Palette generator →