#631B8D#631B8D

#631B8D is a dark, vivid violet. Relative luminance 0.054; OKLCH L 40.0% C 0.176 H 309.0°. Best body text is #FFFFFF at 10.14:1 contrast (WCAG AA passes).

Color values

HEX	#631B8D
RGB	rgb(99, 27, 141)
HSL	hsl(278, 68%, 33%)
HSV	hsv(278, 81%, 55%)
CMYK	cmyk(29.8%, 80.9%, 0%, 44.7%)
CIE-LAB	lab(27.74, 50.20, -48.17)
CIE-LCH	lch(27.74, 69.57, 316.19°)
OKLab	oklab(39.98% 0.1106 -0.1368)
OKLCH	oklch(39.98% 0.176 309)
XYZ	xyz(10.3443, 5.3598, 25.6838)
Luminance	0.0536 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631B8D #458D1B

analogous

#2A1B8D #631B8D #8D1B7E

triadic

#631B8D #8D631B #1B8D63

tetradic

#631B8D #8D2A1B #458D1B #1B7E8D

square

#631B8D #8D2A1B #458D1B #1B7E8D

split-complementary

#631B8D #7E8D1B #1B8D2A

monochromatic

#1B0726 #3F115A #631B8D #8725C0 #A547DC

Accessibility & contrast

On white

10.14

#631B8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#631B8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631B8D

10.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631B8D	#FFFFFF	#000000	##FFFFFF
##631B8D	1.00	10.14	2.07	10.14
#FFFFFF	10.14	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F90

Deuteranopia (green-blind)

#00428B

Tritanopia (blue-blind)

#5C3854

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #631b8d;
/* rgb */ color: rgb(99, 27, 141);
/* oklch */ color: oklch(40.0% 0.176 309.0);

Tailwind

colors: {
  custom: {
    50: '#9461af',
    500: '#631b8d',
    950: '#000000',
  },
}

SCSS

$custom: #631b8d;
$custom-light: #9461af;
$custom-dark: #000000;

JSON

{
  "hex": "#631b8d",
  "rgb": {
    "r": 99,
    "g": 27,
    "b": 141
  },
  "hsl": {
    "h": 277.895,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.3998,
    "c": 0.17593,
    "h": 309
  },
  "luminance": 0.0536
}

Semantic roles & 50–950 ramp

primary

#631B8D

secondary

#72BD46

accent

#EB3D7D

background

#F9F6FA

surface

#F2EBF5

border

#CCC6CF

text

#0E0510

muted

#7E7A7F

Preview Lab

Preview with #631B8D

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

Preview Lab → · Contrast checker → · Palette generator →