#631583#631583

#631583 is a dark, vivid purple. Relative luminance 0.048; OKLCH L 38.7% C 0.172 H 313.2°. Best body text is #FFFFFF at 10.68:1 contrast (WCAG AA passes).

Color values

HEX	#631583
RGB	rgb(99, 21, 131)
HSL	hsl(283, 72%, 30%)
HSV	hsv(283, 84%, 51%)
CMYK	cmyk(24.4%, 84%, 0%, 48.6%)
CIE-LAB	lab(26.24, 50.06, -44.35)
CIE-LCH	lch(26.24, 66.88, 318.46°)
OKLab	oklab(38.68% 0.1178 -0.1256)
OKLCH	oklch(38.68% 0.172 313.2)
XYZ	xyz(9.5098, 4.8280, 21.8993)
Luminance	0.0483 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Indigo

#4B0082

ΔE00 5.34

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631583 #358315

analogous

#2C1583 #631583 #83156C

triadic

#631583 #836315 #158363

tetradic

#631583 #832C15 #358315 #156C83

square

#631583 #832C15 #358315 #156C83

split-complementary

#631583 #6C8315 #15832C

monochromatic

#14041A #3B0D4E #631583 #8B1DB8 #AD34DE

Accessibility & contrast

On white

10.68

#631583 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#631583 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631583

10.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631583	#FFFFFF	#000000	##FFFFFF
##631583	1.00	10.68	1.97	10.68
#FFFFFF	10.68	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A86

Deuteranopia (green-blind)

#024081

Tritanopia (blue-blind)

#5F314D

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #631583;
/* rgb */ color: rgb(99, 21, 131);
/* oklch */ color: oklch(38.7% 0.172 313.2);

Tailwind

colors: {
  custom: {
    50: '#945ea8',
    500: '#631583',
    950: '#000000',
  },
}

SCSS

$custom: #631583;
$custom-light: #945ea8;
$custom-dark: #000000;

JSON

{
  "hex": "#631583",
  "rgb": {
    "r": 99,
    "g": 21,
    "b": 131
  },
  "hsl": {
    "h": 282.545,
    "s": 72.368,
    "l": 29.804
  },
  "oklch": {
    "l": 0.38682,
    "c": 0.17219,
    "h": 313.2
  },
  "luminance": 0.04828
}

Semantic roles & 50–950 ramp

primary

#631583

secondary

#60B83C

accent

#EF396E

background

#F9F5FA

surface

#F2EAF4

border

#CCC6CE

text

#0E0510

muted

#7E797F

Preview Lab

Preview with #631583

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

Preview Lab → · Contrast checker → · Palette generator →