#631B82#631B82

#631B82 is a dark, vivid purple. Relative luminance 0.050; OKLCH L 39.1% C 0.165 H 313.1°. Best body text is #FFFFFF at 10.45:1 contrast (WCAG AA passes).

Color values

HEX	#631B82
RGB	rgb(99, 27, 130)
HSL	hsl(282, 66%, 31%)
HSV	hsv(282, 79%, 51%)
CMYK	cmyk(23.8%, 79.2%, 0%, 49%)
CIE-LAB	lab(26.87, 47.78, -42.70)
CIE-LCH	lch(26.87, 64.08, 318.22°)
OKLab	oklab(39.1% 0.113 -0.1207)
OKLCH	oklch(39.1% 0.165 313.1)
XYZ	xyz(9.5661, 5.0485, 21.5853)
Luminance	0.0505 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631B82 #3A821B

analogous

#2F1B82 #631B82 #821B6D

triadic

#631B82 #82631B #1B8263

tetradic

#631B82 #822F1B #3A821B #1B6D82

square

#631B82 #822F1B #3A821B #1B6D82

split-complementary

#631B82 #6D821B #1B822F

monochromatic

#16061D #3C104F #631B82 #8A26B5 #AA40D7

Accessibility & contrast

On white

10.45

#631B82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#631B82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631B82

10.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631B82	#FFFFFF	#000000	##FFFFFF
##631B82	1.00	10.45	2.01	10.45
#FFFFFF	10.45	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C85

Deuteranopia (green-blind)

#0E4180

Tritanopia (blue-blind)

#60334E

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #631b82;
/* rgb */ color: rgb(99, 27, 130);
/* oklch */ color: oklch(39.1% 0.165 313.1);

Tailwind

colors: {
  custom: {
    50: '#9360a7',
    500: '#631b82',
    950: '#000000',
  },
}

SCSS

$custom: #631b82;
$custom-light: #9360a7;
$custom-dark: #000000;

JSON

{
  "hex": "#631b82",
  "rgb": {
    "r": 99,
    "g": 27,
    "b": 130
  },
  "hsl": {
    "h": 281.942,
    "s": 65.605,
    "l": 30.784
  },
  "oklch": {
    "l": 0.39103,
    "c": 0.16538,
    "h": 313.1
  },
  "luminance": 0.05048
}

Semantic roles & 50–950 ramp

primary

#631B82

secondary

#66B643

accent

#E93F72

background

#F9F5FA

surface

#F2EAF4

border

#CCC6CE

text

#0E050F

muted

#7E797F

Preview Lab

Preview with #631B82

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

Preview Lab → · Contrast checker → · Palette generator →