#631F91#631F91

#631F91 is a dark, vivid violet. Relative luminance 0.057; OKLCH L 40.7% C 0.176 H 307.2°. Best body text is #FFFFFF at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#631F91
RGB	rgb(99, 31, 145)
HSL	hsl(276, 65%, 35%)
HSV	hsv(276, 79%, 57%)
CMYK	cmyk(31.7%, 78.6%, 0%, 43.1%)
CIE-LAB	lab(28.58, 49.60, -49.27)
CIE-LCH	lch(28.58, 69.91, 315.19°)
OKLab	oklab(40.67% 0.1062 -0.1401)
OKLCH	oklch(40.67% 0.176 307.2)
XYZ	xyz(10.7453, 5.6771, 27.3123)
Luminance	0.0568 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631F91 #4D911F

analogous

#2A1F91 #631F91 #911F86

triadic

#631F91 #91631F #1F9163

tetradic

#631F91 #912A1F #4D911F #1F8691

square

#631F91 #912A1F #4D911F #1F8691

split-complementary

#631F91 #86911F #1F912A

monochromatic

#1E092C #41145F #631F91 #852AC3 #A251DA

Accessibility & contrast

On white

9.83

#631F91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#631F91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631F91

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631F91	#FFFFFF	#000000	##FFFFFF
##631F91	1.00	9.83	2.14	9.83
#FFFFFF	9.83	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004194

Deuteranopia (green-blind)

#00448F

Tritanopia (blue-blind)

#5B3C57

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #631f91;
/* rgb */ color: rgb(99, 31, 145);
/* oklch */ color: oklch(40.7% 0.176 307.2);

Tailwind

colors: {
  custom: {
    50: '#9463b2',
    500: '#631f91',
    950: '#000000',
  },
}

SCSS

$custom: #631f91;
$custom-light: #9463b2;
$custom-dark: #000000;

JSON

{
  "hex": "#631f91",
  "rgb": {
    "r": 99,
    "g": 31,
    "b": 145
  },
  "hsl": {
    "h": 275.789,
    "s": 64.773,
    "l": 34.51
  },
  "oklch": {
    "l": 0.40675,
    "c": 0.17577,
    "h": 307.2
  },
  "luminance": 0.05677
}

Semantic roles & 50–950 ramp

primary

#631F91

secondary

#7BBD4F

accent

#E84084

background

#F9F6FB

surface

#F2EBF6

border

#CCC6D0

text

#0E0611

muted

#7E7A80

Preview Lab

Preview with #631F91

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

Preview Lab → · Contrast checker → · Palette generator →