#631B63#631B63

#631B63 is a dark, vivid purple. Relative luminance 0.043; OKLCH L 36.9% C 0.137 H 327.9°. Best body text is #FFFFFF at 11.25:1 contrast (WCAG AA passes).

Color values

HEX	#631B63
RGB	rgb(99, 27, 99)
HSL	hsl(300, 57%, 25%)
HSV	hsv(300, 73%, 39%)
CMYK	cmyk(0%, 72.7%, 0%, 61.2%)
CIE-LAB	lab(24.76, 41.50, -26.22)
CIE-LCH	lch(24.76, 49.09, 327.71°)
OKLab	oklab(36.92% 0.1157 -0.0726)
OKLCH	oklch(36.92% 0.137 327.9)
XYZ	xyz(7.7896, 4.3379, 12.2290)
Luminance	0.0434 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631B63 #1B631B

analogous

#3F1B63 #631B63 #631B3F

triadic

#631B63 #63631B #1B6363

tetradic

#631B63 #633F1B #1B631B #1B3F63

square

#631B63 #633F1B #1B631B #1B3F63

split-complementary

#631B63 #3F631B #1B633F

monochromatic

#180718 #330E33 #631B63 #932893 #C335C3

Accessibility & contrast

On white

11.25

#631B63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#631B63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631B63

11.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631B63	#FFFFFF	#000000	##FFFFFF
##631B63	1.00	11.25	1.87	11.25
#FFFFFF	11.25	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F3565

Deuteranopia (green-blind)

#2E3E61

Tritanopia (blue-blind)

#66253D

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #631b63;
/* rgb */ color: rgb(99, 27, 99);
/* oklch */ color: oklch(36.9% 0.137 327.9);

Tailwind

colors: {
  custom: {
    50: '#925f90',
    500: '#631b63',
    950: '#000000',
  },
}

SCSS

$custom: #631b63;
$custom-light: #925f90;
$custom-dark: #000000;

JSON

{
  "hex": "#631b63",
  "rgb": {
    "r": 99,
    "g": 27,
    "b": 99
  },
  "hsl": {
    "h": 300,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.36923,
    "c": 0.1366,
    "h": 327.9
  },
  "luminance": 0.04337
}

Semantic roles & 50–950 ramp

primary

#631B63

secondary

#419841

accent

#E04747

background

#F9F5F8

surface

#F1EAF0

border

#CBC6CB

text

#0D050C

muted

#7E797D

Preview Lab

Preview with #631B63

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

Preview Lab → · Contrast checker → · Palette generator →