#631F8D#631F8D

#631F8D is a dark, vivid violet. Relative luminance 0.056; OKLCH L 40.4% C 0.172 H 308.6°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#631F8D
RGB	rgb(99, 31, 141)
HSL	hsl(277, 64%, 34%)
HSV	hsv(277, 78%, 55%)
CMYK	cmyk(29.8%, 78%, 0%, 44.7%)
CIE-LAB	lab(28.26, 48.68, -47.31)
CIE-LCH	lch(28.26, 67.89, 315.82°)
OKLab	oklab(40.35% 0.1071 -0.1343)
OKLCH	oklch(40.35% 0.172 308.6)
XYZ	xyz(10.4423, 5.5559, 25.7164)
Luminance	0.0556 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631F8D #498D1F

analogous

#2C1F8D #631F8D #8D1F80

triadic

#631F8D #8D631F #1F8D63

tetradic

#631F8D #8D2C1F #498D1F #1F808D

square

#631F8D #8D2C1F #498D1F #1F808D

split-complementary

#631F8D #808D1F #1F8D2C

monochromatic

#1D0929 #40145B #631F8D #862ABF #A34ED8

Accessibility & contrast

On white

9.95

#631F8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#631F8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631F8D

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631F8D	#FFFFFF	#000000	##FFFFFF
##631F8D	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004090

Deuteranopia (green-blind)

#00438B

Tritanopia (blue-blind)

#5C3A55

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #631f8d;
/* rgb */ color: rgb(99, 31, 141);
/* oklch */ color: oklch(40.4% 0.172 308.6);

Tailwind

colors: {
  custom: {
    50: '#9463af',
    500: '#631f8d',
    950: '#000000',
  },
}

SCSS

$custom: #631f8d;
$custom-light: #9463af;
$custom-dark: #000000;

JSON

{
  "hex": "#631f8d",
  "rgb": {
    "r": 99,
    "g": 31,
    "b": 141
  },
  "hsl": {
    "h": 277.091,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.4035,
    "c": 0.17179,
    "h": 308.6
  },
  "luminance": 0.05556
}

Semantic roles & 50–950 ramp

primary

#631F8D

secondary

#77BB4D

accent

#E74180

background

#F9F6FA

surface

#F2EBF5

border

#CCC6CF

text

#0E0610

muted

#7E7A7F

Preview Lab

Preview with #631F8D

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

Preview Lab → · Contrast checker → · Palette generator →