#631C8B#631C8B

#631C8B is a dark, vivid violet. Relative luminance 0.053; OKLCH L 39.9% C 0.173 H 309.6°. Best body text is #FFFFFF at 10.15:1 contrast (WCAG AA passes).

Color values

HEX	#631C8B
RGB	rgb(99, 28, 139)
HSL	hsl(278, 66%, 33%)
HSV	hsv(278, 80%, 55%)
CMYK	cmyk(28.8%, 79.9%, 0%, 45.5%)
CIE-LAB	lab(27.70, 49.39, -46.98)
CIE-LCH	lch(27.70, 68.16, 316.43°)
OKLab	oklab(39.91% 0.1102 -0.1333)
OKLCH	oklch(39.91% 0.173 309.6)
XYZ	xyz(10.2201, 5.3474, 24.9149)
Luminance	0.0535 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631C8B #448B1C

analogous

#2B1C8B #631C8B #8B1C7C

triadic

#631C8B #8B631C #1C8B63

tetradic

#631C8B #8B2B1C #448B1C #1C7C8B

square

#631C8B #8B2B1C #448B1C #1C7C8B

split-complementary

#631C8B #7C8B1C #1C8B2B

monochromatic

#1A0725 #3F1258 #631C8B #8726BE #A547DA

Accessibility & contrast

On white

10.15

#631C8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#631C8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631C8B

10.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631C8B	#FFFFFF	#000000	##FFFFFF
##631C8B	1.00	10.15	2.07	10.15
#FFFFFF	10.15	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8E

Deuteranopia (green-blind)

#004289

Tritanopia (blue-blind)

#5D3853

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #631c8b;
/* rgb */ color: rgb(99, 28, 139);
/* oklch */ color: oklch(39.9% 0.173 309.6);

Tailwind

colors: {
  custom: {
    50: '#9461ae',
    500: '#631c8b',
    950: '#000000',
  },
}

SCSS

$custom: #631c8b;
$custom-light: #9461ae;
$custom-dark: #000000;

JSON

{
  "hex": "#631c8b",
  "rgb": {
    "r": 99,
    "g": 28,
    "b": 139
  },
  "hsl": {
    "h": 278.378,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.39906,
    "c": 0.173,
    "h": 309.6
  },
  "luminance": 0.05347
}

Semantic roles & 50–950 ramp

primary

#631C8B

secondary

#71BC47

accent

#E93E7C

background

#F9F6FA

surface

#F2EBF4

border

#CCC6CE

text

#0E0510

muted

#7E7A7F

Preview Lab

Preview with #631C8B

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

Preview Lab → · Contrast checker → · Palette generator →