#331B4B#331B4B

#331B4B is a dark, moderate violet. Relative luminance 0.020; OKLCH L 28.1% C 0.087 H 304.5°. Best body text is #FFFFFF at 15.01:1 contrast (WCAG AA passes).

Color values

HEX	#331B4B
RGB	rgb(51, 27, 75)
HSL	hsl(270, 47%, 20%)
HSV	hsv(270, 64%, 29%)
CMYK	cmyk(32%, 64%, 0%, 70.6%)
CIE-LAB	lab(15.46, 22.86, -25.41)
CIE-LCH	lch(15.46, 34.18, 311.97°)
OKLab	oklab(28.1% 0.0492 -0.0718)
OKLCH	oklch(28.1% 0.087 304.5)
XYZ	xyz(3.0269, 1.9957, 6.8810)
Luminance	0.0200 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B4B #334B1B

analogous

#1B1B4B #331B4B #4B1B4B

triadic

#331B4B #4B331B #1B4B33

tetradic

#331B4B #4B1B1B #334B1B #1B4B4B

square

#331B4B #4B1B1B #334B1B #1B4B4B

split-complementary

#331B4B #4B4B1B #1B4B1B

monochromatic

#0F0817 #140B1E #331B4B #522B78 #703BA5

Accessibility & contrast

On white

15.01

#331B4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#331B4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B4B

15.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B4B	#FFFFFF	#000000	##FFFFFF
##331B4B	1.00	15.01	1.40	15.01
#FFFFFF	15.01	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#07264D

Deuteranopia (green-blind)

#11274A

Tritanopia (blue-blind)

#2F2430

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #331b4b;
/* rgb */ color: rgb(51, 27, 75);
/* oklch */ color: oklch(28.1% 0.087 304.5);

Tailwind

colors: {
  custom: {
    50: '#6d587d',
    500: '#331b4b',
    950: '#000000',
  },
}

SCSS

$custom: #331b4b;
$custom-light: #6d587d;
$custom-dark: #000000;

JSON

{
  "hex": "#331b4b",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 75
  },
  "hsl": {
    "h": 270,
    "s": 47.059,
    "l": 20
  },
  "oklch": {
    "l": 0.28095,
    "c": 0.08702,
    "h": 304.5
  },
  "luminance": 0.01996
}

Semantic roles & 50–950 ramp

primary

#331B4B

secondary

#618141

accent

#D75194

background

#F6F5F7

surface

#ECE9EE

border

#C7C5C9

text

#07030A

muted

#7A787C

Preview Lab

Preview with #331B4B

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

Preview Lab → · Contrast checker → · Palette generator →