#631B8A#631B8A

#631B8A is a dark, vivid violet. Relative luminance 0.053; OKLCH L 39.7% C 0.173 H 310.0°. Best body text is #FFFFFF at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#631B8A
RGB	rgb(99, 27, 138)
HSL	hsl(279, 67%, 32%)
HSV	hsv(279, 80%, 54%)
CMYK	cmyk(28.3%, 80.4%, 0%, 45.9%)
CIE-LAB	lab(27.50, 49.54, -46.69)
CIE-LCH	lch(27.50, 68.07, 316.69°)
OKLab	oklab(39.74% 0.1113 -0.1325)
OKLCH	oklch(39.74% 0.173 310)
XYZ	xyz(10.1241, 5.2717, 24.5240)
Luminance	0.0527 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631B8A #428A1B

analogous

#2C1B8A #631B8A #8A1B7A

triadic

#631B8A #8A631B #1B8A63

tetradic

#631B8A #8A2C1B #428A1B #1B7A8A

square

#631B8A #8A2C1B #428A1B #1B7A8A

split-complementary

#631B8A #7A8A1B #1B8A2C

monochromatic

#1A0724 #3E1157 #631B8A #8825BD #A645DB

Accessibility & contrast

On white

10.22

#631B8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#631B8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631B8A

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631B8A	#FFFFFF	#000000	##FFFFFF
##631B8A	1.00	10.22	2.05	10.22
#FFFFFF	10.22	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8D

Deuteranopia (green-blind)

#004288

Tritanopia (blue-blind)

#5D3752

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #631b8a;
/* rgb */ color: rgb(99, 27, 138);
/* oklch */ color: oklch(39.7% 0.173 310.0);

Tailwind

colors: {
  custom: {
    50: '#9461ad',
    500: '#631b8a',
    950: '#000000',
  },
}

SCSS

$custom: #631b8a;
$custom-light: #9461ad;
$custom-dark: #000000;

JSON

{
  "hex": "#631b8a",
  "rgb": {
    "r": 99,
    "g": 27,
    "b": 138
  },
  "hsl": {
    "h": 278.919,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.39736,
    "c": 0.17305,
    "h": 310
  },
  "luminance": 0.05271
}

Semantic roles & 50–950 ramp

primary

#631B8A

secondary

#6FBC45

accent

#EA3E7A

background

#F9F6FA

surface

#F2EBF4

border

#CCC6CE

text

#0E0510

muted

#7E7A7F

Preview Lab

Preview with #631B8A

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

Preview Lab → · Contrast checker → · Palette generator →