#331B3F#331B3F

#331B3F is a dark, moderate purple. Relative luminance 0.018; OKLCH L 27.2% C 0.070 H 313.4°. Best body text is #FFFFFF at 15.34:1 contrast (WCAG AA passes).

Color values

HEX	#331B3F
RGB	rgb(51, 27, 63)
HSL	hsl(280, 40%, 18%)
HSV	hsv(280, 57%, 25%)
CMYK	cmyk(19%, 57.1%, 0%, 75.3%)
CIE-LAB	lab(14.66, 19.54, -18.36)
CIE-LCH	lch(14.66, 26.81, 316.77°)
OKLab	oklab(27.24% 0.0483 -0.0512)
OKLCH	oklch(27.24% 0.07 313.4)
XYZ	xyz(2.6542, 1.8466, 4.9183)
Luminance	0.0185 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B3F #273F1B

analogous

#211B3F #331B3F #3F1B39

triadic

#331B3F #3F331B #1B3F33

tetradic

#331B3F #3F211B #273F1B #1B393F

square

#331B3F #3F211B #273F1B #1B393F

split-complementary

#331B3F #393F1B #1B3F21

monochromatic

#110915 #110915 #331B3F #562D6A #784095

Accessibility & contrast

On white

15.34

#331B3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#331B3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B3F

15.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B3F	#FFFFFF	#000000	##FFFFFF
##331B3F	1.00	15.34	1.37	15.34
#FFFFFF	15.34	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#132440

Deuteranopia (green-blind)

#1A263E

Tritanopia (blue-blind)

#32212A

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #331b3f;
/* rgb */ color: rgb(51, 27, 63);
/* oklch */ color: oklch(27.2% 0.070 313.4);

Tailwind

colors: {
  custom: {
    50: '#6c5874',
    500: '#331b3f',
    950: '#000000',
  },
}

SCSS

$custom: #331b3f;
$custom-light: #6c5874;
$custom-dark: #000000;

JSON

{
  "hex": "#331b3f",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 63
  },
  "hsl": {
    "h": 280,
    "s": 40,
    "l": 17.647
  },
  "oklch": {
    "l": 0.27243,
    "c": 0.0704,
    "h": 313.4
  },
  "luminance": 0.01847
}

Semantic roles & 50–950 ramp

primary

#331B3F

secondary

#527441

accent

#D05880

background

#F6F5F7

surface

#EBE9ED

border

#C6C5C8

text

#070308

muted

#7A787B

Preview Lab

Preview with #331B3F

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

Preview Lab → · Contrast checker → · Palette generator →