#331B3E#331B3E

#331B3E is a dark, moderate purple. Relative luminance 0.018; OKLCH L 27.2% C 0.069 H 314.3°. Best body text is #FFFFFF at 15.36:1 contrast (WCAG AA passes).

Color values

HEX	#331B3E
RGB	rgb(51, 27, 62)
HSL	hsl(281, 39%, 17%)
HSV	hsv(281, 56%, 24%)
CMYK	cmyk(17.7%, 56.5%, 0%, 75.7%)
CIE-LAB	lab(14.60, 19.27, -17.76)
CIE-LCH	lch(14.60, 26.21, 317.34°)
OKLab	oklab(27.18% 0.0482 -0.0494)
OKLCH	oklch(27.18% 0.069 314.3)
XYZ	xyz(2.6265, 1.8355, 4.7724)
Luminance	0.0184 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B3E #263E1B

analogous

#221B3E #331B3E #3E1B38

triadic

#331B3E #3E331B #1B3E33

tetradic

#331B3E #3E221B #263E1B #1B383E

square

#331B3E #3E221B #263E1B #1B383E

split-complementary

#331B3E #383E1B #1B3E22

monochromatic

#120915 #120915 #331B3E #562E69 #794093

Accessibility & contrast

On white

15.36

#331B3E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#331B3E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B3E

15.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B3E	#FFFFFF	#000000	##FFFFFF
##331B3E	1.00	15.36	1.37	15.36
#FFFFFF	15.36	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#13233F

Deuteranopia (green-blind)

#1A253D

Tritanopia (blue-blind)

#322029

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #331b3e;
/* rgb */ color: rgb(51, 27, 62);
/* oklch */ color: oklch(27.2% 0.069 314.3);

Tailwind

colors: {
  custom: {
    50: '#6c5873',
    500: '#331b3e',
    950: '#000000',
  },
}

SCSS

$custom: #331b3e;
$custom-light: #6c5873;
$custom-dark: #000000;

JSON

{
  "hex": "#331b3e",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 62
  },
  "hsl": {
    "h": 281.143,
    "s": 39.326,
    "l": 17.451
  },
  "oklch": {
    "l": 0.27178,
    "c": 0.06903,
    "h": 314.3
  },
  "luminance": 0.01835
}

Semantic roles & 50–950 ramp

primary

#331B3E

secondary

#517342

accent

#CF597E

background

#F6F5F7

surface

#EBE9ED

border

#C6C5C8

text

#070308

muted

#7A787B

Preview Lab

Preview with #331B3E

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

Preview Lab → · Contrast checker → · Palette generator →