#631D91#631D91

#631D91 is a dark, vivid violet. Relative luminance 0.056; OKLCH L 40.5% C 0.178 H 307.4°. Best body text is #FFFFFF at 9.93:1 contrast (WCAG AA passes).

Color values

HEX	#631D91
RGB	rgb(99, 29, 145)
HSL	hsl(276, 67%, 34%)
HSV	hsv(276, 80%, 57%)
CMYK	cmyk(31.7%, 80%, 0%, 43.1%)
CIE-LAB	lab(28.32, 50.37, -49.70)
CIE-LCH	lch(28.32, 70.76, 315.38°)
OKLab	oklab(40.49% 0.1079 -0.1413)
OKLCH	oklch(40.49% 0.178 307.4)
XYZ	xyz(10.6947, 5.5759, 27.2954)
Luminance	0.0558 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631D91 #4B911D

analogous

#291D91 #631D91 #911D85

triadic

#631D91 #91631D #1D9163

tetradic

#631D91 #91291D #4B911D #1D8591

square

#631D91 #91291D #4B911D #1D8591

split-complementary

#631D91 #85911D #1D9129

monochromatic

#1D092B #40135E #631D91 #8627C4 #A34DDB

Accessibility & contrast

On white

9.93

#631D91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#631D91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631D91

9.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631D91	#FFFFFF	#000000	##FFFFFF
##631D91	1.00	9.93	2.12	9.93
#FFFFFF	9.93	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004094

Deuteranopia (green-blind)

#00438F

Tritanopia (blue-blind)

#5B3B57

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #631d91;
/* rgb */ color: rgb(99, 29, 145);
/* oklch */ color: oklch(40.5% 0.178 307.4);

Tailwind

colors: {
  custom: {
    50: '#9462b2',
    500: '#631d91',
    950: '#000000',
  },
}

SCSS

$custom: #631d91;
$custom-light: #9462b2;
$custom-dark: #000000;

JSON

{
  "hex": "#631d91",
  "rgb": {
    "r": 99,
    "g": 29,
    "b": 145
  },
  "hsl": {
    "h": 276.207,
    "s": 66.667,
    "l": 34.118
  },
  "oklch": {
    "l": 0.40488,
    "c": 0.17783,
    "h": 307.4
  },
  "luminance": 0.05576
}

Semantic roles & 50–950 ramp

primary

#631D91

secondary

#79BE4C

accent

#EA3E82

background

#F9F6FB

surface

#F2EBF6

border

#CCC6D0

text

#0E0611

muted

#7E7A80

Preview Lab

Preview with #631D91

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

Preview Lab → · Contrast checker → · Palette generator →