#331B3D#331B3D

#331B3D is a dark, moderate purple. Relative luminance 0.018; OKLCH L 27.1% C 0.068 H 315.2°. Best body text is #FFFFFF at 15.38:1 contrast (WCAG AA passes).

Color values

HEX	#331B3D
RGB	rgb(51, 27, 61)
HSL	hsl(282, 39%, 17%)
HSV	hsv(282, 56%, 24%)
CMYK	cmyk(16.4%, 55.7%, 0%, 76.1%)
CIE-LAB	lab(14.54, 19.01, -17.15)
CIE-LCH	lch(14.54, 25.60, 317.94°)
OKLab	oklab(27.11% 0.048 -0.0476)
OKLCH	oklch(27.11% 0.068 315.2)
XYZ	xyz(2.5993, 1.8247, 4.6292)
Luminance	0.0182 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B3D #253D1B

analogous

#221B3D #331B3D #3D1B36

triadic

#331B3D #3D331B #1B3D33

tetradic

#331B3D #3D221B #253D1B #1B363D

square

#331B3D #3D221B #253D1B #1B363D

split-complementary

#331B3D #363D1B #1B3D22

monochromatic

#120915 #120915 #331B3D #562E67 #7A4192

Accessibility & contrast

On white

15.38

#331B3D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#331B3D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B3D

15.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B3D	#FFFFFF	#000000	##FFFFFF
##331B3D	1.00	15.38	1.37	15.38
#FFFFFF	15.38	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14233E

Deuteranopia (green-blind)

#1B253C

Tritanopia (blue-blind)

#322029

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #331b3d;
/* rgb */ color: rgb(51, 27, 61);
/* oklch */ color: oklch(27.1% 0.068 315.2);

Tailwind

colors: {
  custom: {
    50: '#6c5872',
    500: '#331b3d',
    950: '#000000',
  },
}

SCSS

$custom: #331b3d;
$custom-light: #6c5872;
$custom-dark: #000000;

JSON

{
  "hex": "#331b3d",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 61
  },
  "hsl": {
    "h": 282.353,
    "s": 38.636,
    "l": 17.255
  },
  "oklch": {
    "l": 0.27113,
    "c": 0.06766,
    "h": 315.2
  },
  "luminance": 0.01825
}

Semantic roles & 50–950 ramp

primary

#331B3D

secondary

#507242

accent

#CF597C

background

#F6F5F6

surface

#EBE9EC

border

#C6C5C7

text

#070308

muted

#7A787B

Preview Lab

Preview with #331B3D

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

Preview Lab → · Contrast checker → · Palette generator →