#31103B#31103B

#31103B is a very dark, moderate purple. Relative luminance 0.013; OKLCH L 24.8% C 0.085 H 317.5°. Best body text is #FFFFFF at 16.56:1 contrast (WCAG AA passes).

Color values

HEX	#31103B
RGB	rgb(49, 16, 59)
HSL	hsl(286, 57%, 15%)
HSV	hsv(286, 73%, 23%)
CMYK	cmyk(16.9%, 72.9%, 0%, 76.9%)
CIE-LAB	lab(11.55, 24.64, -20.49)
CIE-LCH	lch(11.55, 32.04, 320.25°)
OKLab	oklab(24.81% 0.0627 -0.0574)
OKLCH	oklch(24.81% 0.085 317.5)
XYZ	xyz(2.2412, 1.3394, 4.2773)
Luminance	0.0134 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31103B #1A3B10

analogous

#1C103B #31103B #3B102F

triadic

#31103B #3B3110 #103B31

tetradic

#31103B #3B1C10 #1A3B10 #102F3B

square

#31103B #3B1C10 #1A3B10 #102F3B

split-complementary

#31103B #2F3B10 #103B1C

monochromatic

#140718 #140718 #31103B #591D6B #812A9B

Accessibility & contrast

On white

16.56

#31103B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#31103B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31103B

16.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31103B	#FFFFFF	#000000	##FFFFFF
##31103B	1.00	16.56	1.27	16.56
#FFFFFF	16.56	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#041C3C

Deuteranopia (green-blind)

#11203A

Tritanopia (blue-blind)

#311823

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #31103b;
/* rgb */ color: rgb(49, 16, 59);
/* oklch */ color: oklch(24.8% 0.085 317.5);

Tailwind

colors: {
  custom: {
    50: '#6b5171',
    500: '#31103b',
    950: '#000000',
  },
}

SCSS

$custom: #31103b;
$custom-light: #6b5171;
$custom-dark: #000000;

JSON

{
  "hex": "#31103b",
  "rgb": {
    "r": 49,
    "g": 16,
    "b": 59
  },
  "hsl": {
    "h": 286.047,
    "s": 57.333,
    "l": 14.706
  },
  "oklch": {
    "l": 0.2481,
    "c": 0.08496,
    "h": 317.5
  },
  "luminance": 0.01339
}

Semantic roles & 50–950 ramp

primary

#31103B

secondary

#417532

accent

#E1476B

background

#F6F4F6

surface

#EBE7EC

border

#C6C3C7

text

#070207

muted

#7A787A

Preview Lab

Preview with #31103B

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

Preview Lab → · Contrast checker → · Palette generator →