#631C81#631C81

#631C81 is a dark, vivid purple. Relative luminance 0.051; OKLCH L 39.1% C 0.163 H 313.4°. Best body text is #FFFFFF at 10.43:1 contrast (WCAG AA passes).

Color values

HEX	#631C81
RGB	rgb(99, 28, 129)
HSL	hsl(282, 64%, 31%)
HSV	hsv(282, 78%, 51%)
CMYK	cmyk(23.3%, 78.3%, 0%, 49.4%)
CIE-LAB	lab(26.93, 47.19, -41.98)
CIE-LCH	lch(26.93, 63.16, 318.34°)
OKLab	oklab(39.12% 0.1123 -0.1186)
OKLCH	oklch(39.12% 0.163 313.4)
XYZ	xyz(9.5226, 5.0684, 21.2413)
Luminance	0.0507 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631C81 #3A811C

analogous

#301C81 #631C81 #811C6C

triadic

#631C81 #81631C #1C8163

tetradic

#631C81 #81301C #3A811C #1C6C81

square

#631C81 #81301C #3A811C #1C6C81

split-complementary

#631C81 #6C811C #1C8130

monochromatic

#16061C #3C114F #631C81 #8A27B3 #AA42D6

Accessibility & contrast

On white

10.43

#631C81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#631C81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631C81

10.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631C81	#FFFFFF	#000000	##FFFFFF
##631C81	1.00	10.43	2.01	10.43
#FFFFFF	10.43	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C84

Deuteranopia (green-blind)

#11417F

Tritanopia (blue-blind)

#60334E

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #631c81;
/* rgb */ color: rgb(99, 28, 129);
/* oklch */ color: oklch(39.1% 0.163 313.4);

Tailwind

colors: {
  custom: {
    50: '#9361a6',
    500: '#631c81',
    950: '#000000',
  },
}

SCSS

$custom: #631c81;
$custom-light: #9361a6;
$custom-dark: #000000;

JSON

{
  "hex": "#631c81",
  "rgb": {
    "r": 99,
    "g": 28,
    "b": 129
  },
  "hsl": {
    "h": 282.178,
    "s": 64.331,
    "l": 30.784
  },
  "oklch": {
    "l": 0.39118,
    "c": 0.16333,
    "h": 313.4
  },
  "luminance": 0.05068
}

Semantic roles & 50–950 ramp

primary

#631C81

secondary

#66B444

accent

#E74072

background

#F9F6FA

surface

#F2EBF4

border

#CCC6CE

text

#0D050F

muted

#7E7A7F

Preview Lab

Preview with #631C81

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

Preview Lab → · Contrast checker → · Palette generator →