#631B83#631B83

#631B83 is a dark, vivid purple. Relative luminance 0.051; OKLCH L 39.2% C 0.166 H 312.7°. Best body text is #FFFFFF at 10.42:1 contrast (WCAG AA passes).

Color values

HEX	#631B83
RGB	rgb(99, 27, 131)
HSL	hsl(282, 66%, 31%)
HSV	hsv(282, 79%, 51%)
CMYK	cmyk(24.4%, 79.4%, 0%, 48.6%)
CIE-LAB	lab(26.95, 48.00, -43.20)
CIE-LCH	lch(26.95, 64.58, 318.01°)
OKLab	oklab(39.18% 0.1128 -0.1222)
OKLCH	oklch(39.18% 0.166 312.7)
XYZ	xyz(9.6335, 5.0755, 21.9405)
Luminance	0.0508 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631B83 #3B831B

analogous

#2F1B83 #631B83 #831B6F

triadic

#631B83 #83631B #1B8363

tetradic

#631B83 #832F1B #3B831B #1B6F83

square

#631B83 #832F1B #3B831B #1B6F83

split-complementary

#631B83 #6F831B #1B832F

monochromatic

#16061E #3D1150 #631B83 #8925B6 #A941D8

Accessibility & contrast

On white

10.42

#631B83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#631B83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631B83

10.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631B83	#FFFFFF	#000000	##FFFFFF
##631B83	1.00	10.42	2.02	10.42
#FFFFFF	10.42	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C86

Deuteranopia (green-blind)

#0C4181

Tritanopia (blue-blind)

#5F344E

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #631b83;
/* rgb */ color: rgb(99, 27, 131);
/* oklch */ color: oklch(39.2% 0.166 312.7);

Tailwind

colors: {
  custom: {
    50: '#9360a8',
    500: '#631b83',
    950: '#000000',
  },
}

SCSS

$custom: #631b83;
$custom-light: #9360a8;
$custom-dark: #000000;

JSON

{
  "hex": "#631b83",
  "rgb": {
    "r": 99,
    "g": 27,
    "b": 131
  },
  "hsl": {
    "h": 281.538,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.3918,
    "c": 0.16633,
    "h": 312.7
  },
  "luminance": 0.05075
}

Semantic roles & 50–950 ramp

primary

#631B83

secondary

#67B643

accent

#E93F73

background

#F9F5FA

surface

#F2EAF4

border

#CCC6CE

text

#0E0510

muted

#7E797F

Preview Lab

Preview with #631B83

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

Preview Lab → · Contrast checker → · Palette generator →