#663B97#663B97

#663B97 is a mid, vivid violet. Relative luminance 0.082; OKLCH L 45.0% C 0.146 H 302.4°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#663B97
RGB	rgb(102, 59, 151)
HSL	hsl(268, 44%, 41%)
HSV	hsv(268, 61%, 59%)
CMYK	cmyk(32.5%, 60.9%, 0%, 40.8%)
CIE-LAB	lab(34.37, 38.02, -43.57)
CIE-LCH	lch(34.37, 57.83, 311.11°)
OKLab	oklab(45.05% 0.0784 -0.1234)
OKLCH	oklch(45.05% 0.146 302.4)
XYZ	xyz(12.6281, 8.1871, 30.1871)
Luminance	0.0819 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663B97 #6C973B

analogous

#3B3E97 #663B97 #943B97

triadic

#663B97 #97663B #3B9766

tetradic

#663B97 #973B3E #6C973B #3B9794

square

#663B97 #973B3E #6C973B #3B9794

split-complementary

#663B97 #97943B #3E973B

monochromatic

#2B193F #482A6B #663B97 #8453BC #A47FCD

Accessibility & contrast

On white

7.96

#663B97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#663B97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663B97

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663B97	#FFFFFF	#000000	##FFFFFF
##663B97	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#09509A

Deuteranopia (green-blind)

#225195

Tritanopia (blue-blind)

#5C4E63

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #663b97;
/* rgb */ color: rgb(102, 59, 151);
/* oklch */ color: oklch(45.0% 0.146 302.4);

Tailwind

colors: {
  custom: {
    50: '#9573b6',
    500: '#663b97',
    950: '#000000',
  },
}

SCSS

$custom: #663b97;
$custom-light: #9573b6;
$custom-dark: #000000;

JSON

{
  "hex": "#663b97",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 151
  },
  "hsl": {
    "h": 268.043,
    "s": 43.81,
    "l": 41.176
  },
  "oklch": {
    "l": 0.45046,
    "c": 0.14619,
    "h": 302.4
  },
  "luminance": 0.08187
}

Semantic roles & 50–950 ramp

primary

#663B97

secondary

#99B777

accent

#D45498

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0811

muted

#7E7B80

Preview Lab

Preview with #663B97

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

Preview Lab → · Contrast checker → · Palette generator →