#631B9E#631B9E

#631B9E is a dark, vivid violet. Relative luminance 0.059; OKLCH L 41.4% C 0.192 H 303.4°. Best body text is #FFFFFF at 9.63:1 contrast (WCAG AA passes).

Color values

HEX	#631B9E
RGB	rgb(99, 27, 158)
HSL	hsl(273, 71%, 36%)
HSV	hsv(273, 83%, 62%)
CMYK	cmyk(37.3%, 82.9%, 0%, 38%)
CIE-LAB	lab(29.17, 54.07, -56.28)
CIE-LCH	lch(29.17, 78.04, 313.86°)
OKLab	oklab(41.43% 0.1058 -0.1606)
OKLCH	oklch(41.43% 0.192 303.4)
XYZ	xyz(11.7076, 5.9051, 32.8641)
Luminance	0.0590 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631B9E #569E1B

analogous

#221B9E #631B9E #9E1B98

triadic

#631B9E #9E631B #1B9E63

tetradic

#631B9E #9E221B #569E1B #1B989E

square

#631B9E #9E221B #569E1B #1B989E

split-complementary

#631B9E #989E1B #1B9E22

monochromatic

#220935 #42126A #631B9E #8424D2 #A152E1

Accessibility & contrast

On white

9.63

#631B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#631B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631B9E

9.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631B9E	#FFFFFF	#000000	##FFFFFF
##631B9E	1.00	9.63	2.18	9.63
#FFFFFF	9.63	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043A1

Deuteranopia (green-blind)

#00449C

Tritanopia (blue-blind)

#57405E

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #631b9e;
/* rgb */ color: rgb(99, 27, 158);
/* oklch */ color: oklch(41.4% 0.192 303.4);

Tailwind

colors: {
  custom: {
    50: '#9662bc',
    500: '#631b9e',
    950: '#000000',
  },
}

SCSS

$custom: #631b9e;
$custom-light: #9662bc;
$custom-dark: #000000;

JSON

{
  "hex": "#631b9e",
  "rgb": {
    "r": 99,
    "g": 27,
    "b": 158
  },
  "hsl": {
    "h": 272.977,
    "s": 70.811,
    "l": 36.275
  },
  "oklch": {
    "l": 0.41426,
    "c": 0.19237,
    "h": 303.4
  },
  "luminance": 0.05905
}

Semantic roles & 50–950 ramp

primary

#631B9E

secondary

#85C451

accent

#EE3A8B

background

#F9F6FB

surface

#F2EBF6

border

#CCC6D0

text

#0E0612

muted

#7E7A81

Preview Lab

Preview with #631B9E

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

Preview Lab → · Contrast checker → · Palette generator →