#631D8B#631D8B

#631D8B is a dark, vivid violet. Relative luminance 0.054; OKLCH L 40.0% C 0.172 H 309.5°. Best body text is #FFFFFF at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#631D8B
RGB	rgb(99, 29, 139)
HSL	hsl(278, 65%, 33%)
HSV	hsv(278, 79%, 55%)
CMYK	cmyk(28.8%, 79.1%, 0%, 45.5%)
CIE-LAB	lab(27.83, 49.01, -46.77)
CIE-LCH	lch(27.83, 67.74, 316.34°)
OKLab	oklab(40% 0.1093 -0.1327)
OKLCH	oklch(40% 0.172 309.5)
XYZ	xyz(10.2442, 5.3957, 24.9229)
Luminance	0.0539 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631D8B #458B1D

analogous

#2C1D8B #631D8B #8B1D7C

triadic

#631D8B #8B631D #1D8B63

tetradic

#631D8B #8B2C1D #458B1D #1D7C8B

square

#631D8B #8B2C1D #458B1D #1D7C8B

split-complementary

#631D8B #7C8B1D #1D8B2C

monochromatic

#1B0826 #3F1258 #631D8B #8728BE #A549D9

Accessibility & contrast

On white

10.10

#631D8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#631D8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631D8B

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631D8B	#FFFFFF	#000000	##FFFFFF
##631D8B	1.00	10.10	2.08	10.10
#FFFFFF	10.10	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8E

Deuteranopia (green-blind)

#004389

Tritanopia (blue-blind)

#5D3853

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #631d8b;
/* rgb */ color: rgb(99, 29, 139);
/* oklch */ color: oklch(40.0% 0.172 309.5);

Tailwind

colors: {
  custom: {
    50: '#9462ae',
    500: '#631d8b',
    950: '#000000',
  },
}

SCSS

$custom: #631d8b;
$custom-light: #9462ae;
$custom-dark: #000000;

JSON

{
  "hex": "#631d8b",
  "rgb": {
    "r": 99,
    "g": 29,
    "b": 139
  },
  "hsl": {
    "h": 278.182,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.39998,
    "c": 0.17196,
    "h": 309.5
  },
  "luminance": 0.05395
}

Semantic roles & 50–950 ramp

primary

#631D8B

secondary

#72BB49

accent

#E83F7D

background

#F9F6FA

surface

#F2EBF4

border

#CCC6CE

text

#0E0510

muted

#7E7A7F

Preview Lab

Preview with #631D8B

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

Preview Lab → · Contrast checker → · Palette generator →