#631B9D#631B9D

#631B9D is a dark, vivid violet. Relative luminance 0.059; OKLCH L 41.3% C 0.191 H 303.7°. Best body text is #FFFFFF at 9.66:1 contrast (WCAG AA passes).

Color values

HEX	#631B9D
RGB	rgb(99, 27, 157)
HSL	hsl(273, 71%, 36%)
HSV	hsv(273, 83%, 62%)
CMYK	cmyk(36.9%, 82.8%, 0%, 38.4%)
CIE-LAB	lab(29.08, 53.84, -55.81)
CIE-LCH	lch(29.08, 77.55, 313.97°)
OKLab	oklab(41.34% 0.1061 -0.1593)
OKLCH	oklch(41.34% 0.191 303.7)
XYZ	xyz(11.6219, 5.8709, 32.4127)
Luminance	0.0587 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631B9D #559D1B

analogous

#221B9D #631B9D #9D1B96

triadic

#631B9D #9D631B #1B9D63

tetradic

#631B9D #9D221B #559D1B #1B969D

square

#631B9D #9D221B #559D1B #1B969D

split-complementary

#631B9D #969D1B #1B9D22

monochromatic

#210935 #421269 #631B9D #8424D1 #A151E1

Accessibility & contrast

On white

9.66

#631B9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#631B9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631B9D

9.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631B9D	#FFFFFF	#000000	##FFFFFF
##631B9D	1.00	9.66	2.17	9.66
#FFFFFF	9.66	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043A0

Deuteranopia (green-blind)

#00449B

Tritanopia (blue-blind)

#573F5D

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #631b9d;
/* rgb */ color: rgb(99, 27, 157);
/* oklch */ color: oklch(41.3% 0.191 303.7);

Tailwind

colors: {
  custom: {
    50: '#9662bb',
    500: '#631b9d',
    950: '#000000',
  },
}

SCSS

$custom: #631b9d;
$custom-light: #9662bb;
$custom-dark: #000000;

JSON

{
  "hex": "#631b9d",
  "rgb": {
    "r": 99,
    "g": 27,
    "b": 157
  },
  "hsl": {
    "h": 273.231,
    "s": 70.652,
    "l": 36.078
  },
  "oklch": {
    "l": 0.41338,
    "c": 0.1914,
    "h": 303.7
  },
  "luminance": 0.05871
}

Semantic roles & 50–950 ramp

primary

#631B9D

secondary

#84C450

accent

#ED3A8A

background

#F9F6FB

surface

#F2EBF6

border

#CCC6D0

text

#0E0612

muted

#7E7A81

Preview Lab

Preview with #631B9D

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

Preview Lab → · Contrast checker → · Palette generator →