#631C99#631C99

#631C99 is a dark, vivid violet. Relative luminance 0.058; OKLCH L 41.1% C 0.187 H 304.8°. Best body text is #FFFFFF at 9.74:1 contrast (WCAG AA passes).

Color values

HEX	#631C99
RGB	rgb(99, 28, 153)
HSL	hsl(274, 69%, 35%)
HSV	hsv(274, 82%, 60%)
CMYK	cmyk(35.3%, 81.7%, 0%, 40%)
CIE-LAB	lab(28.86, 52.57, -53.73)
CIE-LCH	lch(28.86, 75.17, 314.37°)
OKLab	oklab(41.07% 0.1066 -0.1532)
OKLCH	oklch(41.07% 0.187 304.8)
XYZ	xyz(11.3093, 5.7831, 30.6513)
Luminance	0.0578 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631C99 #52991C

analogous

#241C99 #631C99 #991C90

triadic

#631C99 #99631C #1C9963

tetradic

#631C99 #99241C #52991C #1C9099

square

#631C99 #99241C #52991C #1C9099

split-complementary

#631C99 #90991C #1C9924

monochromatic

#200932 #421365 #631C99 #8425CD #A150DF

Accessibility & contrast

On white

9.74

#631C99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#631C99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631C99

9.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631C99	#FFFFFF	#000000	##FFFFFF
##631C99	1.00	9.74	2.16	9.74
#FFFFFF	9.74	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00429C

Deuteranopia (green-blind)

#004497

Tritanopia (blue-blind)

#593E5B

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #631c99;
/* rgb */ color: rgb(99, 28, 153);
/* oklch */ color: oklch(41.1% 0.187 304.8);

Tailwind

colors: {
  custom: {
    50: '#9562b8',
    500: '#631c99',
    950: '#000000',
  },
}

SCSS

$custom: #631c99;
$custom-light: #9562b8;
$custom-dark: #000000;

JSON

{
  "hex": "#631c99",
  "rgb": {
    "r": 99,
    "g": 28,
    "b": 153
  },
  "hsl": {
    "h": 274.08,
    "s": 69.061,
    "l": 35.49
  },
  "oklch": {
    "l": 0.41074,
    "c": 0.18662,
    "h": 304.8
  },
  "luminance": 0.05783
}

Semantic roles & 50–950 ramp

primary

#631C99

secondary

#81C24F

accent

#EC3C88

background

#F9F6FB

surface

#F2EBF6

border

#CCC6D0

text

#0E0611

muted

#7E7A80

Preview Lab

Preview with #631C99

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

Preview Lab → · Contrast checker → · Palette generator →