#663C99#663C99

#663C99 is a mid, vivid violet. Relative luminance 0.084; OKLCH L 45.3% C 0.147 H 301.6°. Best body text is #FFFFFF at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#663C99
RGB	rgb(102, 60, 153)
HSL	hsl(267, 44%, 42%)
HSV	hsv(267, 61%, 60%)
CMYK	cmyk(33.3%, 60.8%, 0%, 40%)
CIE-LAB	lab(34.71, 37.98, -44.23)
CIE-LCH	lch(34.71, 58.30, 310.66°)
OKLab	oklab(45.34% 0.0771 -0.1253)
OKLCH	oklch(45.34% 0.147 301.6)
XYZ	xyz(12.8438, 8.3564, 31.0671)
Luminance	0.0836 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663C99 #6F993C

analogous

#3C4199 #663C99 #953C99

triadic

#663C99 #99663C #3C9966

tetradic

#663C99 #993C41 #6F993C #3C9995

square

#663C99 #993C41 #6F993C #3C9995

split-complementary

#663C99 #99953C #41993C

monochromatic

#2B1A41 #492B6D #663C99 #8456BD #A482CE

Accessibility & contrast

On white

7.86

#663C99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#663C99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663C99

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663C99	#FFFFFF	#000000	##FFFFFF
##663C99	1.00	7.86	2.67	7.86
#FFFFFF	7.86	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#08519C

Deuteranopia (green-blind)

#215197

Tritanopia (blue-blind)

#5C4F64

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #663c99;
/* rgb */ color: rgb(102, 60, 153);
/* oklch */ color: oklch(45.3% 0.147 301.6);

Tailwind

colors: {
  custom: {
    50: '#9574b8',
    500: '#663c99',
    950: '#000000',
  },
}

SCSS

$custom: #663c99;
$custom-light: #9574b8;
$custom-dark: #000000;

JSON

{
  "hex": "#663c99",
  "rgb": {
    "r": 102,
    "g": 60,
    "b": 153
  },
  "hsl": {
    "h": 267.097,
    "s": 43.662,
    "l": 41.765
  },
  "oklch": {
    "l": 0.4534,
    "c": 0.14713,
    "h": 301.6
  },
  "luminance": 0.08356
}

Semantic roles & 50–950 ramp

primary

#663C99

secondary

#9BB879

accent

#D3549A

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0811

muted

#7E7B80

Preview Lab

Preview with #663C99

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

Preview Lab → · Contrast checker → · Palette generator →