#631F99#631F99

#631F99 is a dark, vivid violet. Relative luminance 0.059; OKLCH L 41.3% C 0.184 H 304.5°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#631F99
RGB	rgb(99, 31, 153)
HSL	hsl(273, 66%, 36%)
HSV	hsv(273, 80%, 60%)
CMYK	cmyk(35.3%, 79.7%, 0%, 40%)
CIE-LAB	lab(29.24, 51.46, -53.11)
CIE-LCH	lch(29.24, 73.95, 314.10°)
OKLab	oklab(41.34% 0.1042 -0.1514)
OKLCH	oklch(41.34% 0.184 304.5)
XYZ	xyz(11.3840, 5.9326, 30.6762)
Luminance	0.0593 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631F99 #55991F

analogous

#261F99 #631F99 #991F92

triadic

#631F99 #99631F #1F9963

tetradic

#631F99 #99261F #55991F #1F9299

square

#631F99 #99261F #55991F #1F9299

split-complementary

#631F99 #92991F #1F9926

monochromatic

#210A33 #421566 #631F99 #8429CC #A156DD

Accessibility & contrast

On white

9.60

#631F99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#631F99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631F99

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631F99	#FFFFFF	#000000	##FFFFFF
##631F99	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00439C

Deuteranopia (green-blind)

#004597

Tritanopia (blue-blind)

#583F5C

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #631f99;
/* rgb */ color: rgb(99, 31, 153);
/* oklch */ color: oklch(41.3% 0.184 304.5);

Tailwind

colors: {
  custom: {
    50: '#9563b8',
    500: '#631f99',
    950: '#000000',
  },
}

SCSS

$custom: #631f99;
$custom-light: #9563b8;
$custom-dark: #000000;

JSON

{
  "hex": "#631f99",
  "rgb": {
    "r": 99,
    "g": 31,
    "b": 153
  },
  "hsl": {
    "h": 273.443,
    "s": 66.304,
    "l": 36.078
  },
  "oklch": {
    "l": 0.41342,
    "c": 0.18375,
    "h": 304.5
  },
  "luminance": 0.05933
}

Semantic roles & 50–950 ramp

primary

#631F99

secondary

#84C054

accent

#E93F8A

background

#F9F6FB

surface

#F2EBF6

border

#CCC6D0

text

#0E0611

muted

#7E7A80

Preview Lab

Preview with #631F99

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

Preview Lab → · Contrast checker → · Palette generator →