#631B88#631B88

#631B88 is a dark, vivid violet. Relative luminance 0.052; OKLCH L 39.6% C 0.171 H 310.8°. Best body text is #FFFFFF at 10.28:1 contrast (WCAG AA passes).

Color values

HEX	#631B88
RGB	rgb(99, 27, 136)
HSL	hsl(280, 67%, 32%)
HSV	hsv(280, 80%, 53%)
CMYK	cmyk(27.2%, 80.1%, 0%, 46.7%)
CIE-LAB	lab(27.34, 49.09, -45.70)
CIE-LCH	lch(27.34, 67.08, 317.05°)
OKLab	oklab(39.57% 0.1118 -0.1296)
OKLCH	oklch(39.57% 0.171 310.8)
XYZ	xyz(9.9806, 5.2143, 23.7685)
Luminance	0.0521 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631B88 #40881B

analogous

#2D1B88 #631B88 #881B77

triadic

#631B88 #88631B #1B8863

tetradic

#631B88 #882D1B #40881B #1B7788

square

#631B88 #882D1B #40881B #1B7788

split-complementary

#631B88 #77881B #1B882D

monochromatic

#190722 #3E1155 #631B88 #8825BB #A744DA

Accessibility & contrast

On white

10.28

#631B88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#631B88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631B88

10.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631B88	#FFFFFF	#000000	##FFFFFF
##631B88	1.00	10.28	2.04	10.28
#FFFFFF	10.28	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D8B

Deuteranopia (green-blind)

#004286

Tritanopia (blue-blind)

#5E3651

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #631b88;
/* rgb */ color: rgb(99, 27, 136);
/* oklch */ color: oklch(39.6% 0.171 310.8);

Tailwind

colors: {
  custom: {
    50: '#9461ab',
    500: '#631b88',
    950: '#000000',
  },
}

SCSS

$custom: #631b88;
$custom-light: #9461ab;
$custom-dark: #000000;

JSON

{
  "hex": "#631b88",
  "rgb": {
    "r": 99,
    "g": 27,
    "b": 136
  },
  "hsl": {
    "h": 279.633,
    "s": 66.871,
    "l": 31.961
  },
  "oklch": {
    "l": 0.39575,
    "c": 0.17112,
    "h": 310.8
  },
  "luminance": 0.05214
}

Semantic roles & 50–950 ramp

primary

#631B88

secondary

#6CBB44

accent

#EA3E78

background

#F9F6FA

surface

#F2EBF4

border

#CCC6CE

text

#0E0510

muted

#7E7A7F

Preview Lab

Preview with #631B88

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

Preview Lab → · Contrast checker → · Palette generator →