#663C9D#663C9D

#663C9D is a mid, vivid violet. Relative luminance 0.085; OKLCH L 45.6% C 0.152 H 300.4°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#663C9D
RGB	rgb(102, 60, 157)
HSL	hsl(266, 45%, 43%)
HSV	hsv(266, 62%, 62%)
CMYK	cmyk(35%, 61.8%, 0%, 38.4%)
CIE-LAB	lab(34.98, 39.04, -46.22)
CIE-LCH	lch(34.98, 60.50, 310.19°)
OKLab	oklab(45.62% 0.077 -0.1311)
OKLCH	oklch(45.62% 0.152 300.4)
XYZ	xyz(13.1797, 8.4907, 32.8363)
Luminance	0.0849 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663C9D #739D3C

analogous

#3C439D #663C9D #963C9D

triadic

#663C9D #9D663C #3C9D66

tetradic

#663C9D #9D3C43 #739D3C #3C9D96

square

#663C9D #9D3C43 #739D3C #3C9D96

split-complementary

#663C9D #9D963C #439D3C

monochromatic

#2C1A44 #492B71 #663C9D #8457BF #A584D0

Accessibility & contrast

On white

7.78

#663C9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#663C9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663C9D

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663C9D	#FFFFFF	#000000	##FFFFFF
##663C9D	1.00	7.78	2.70	7.78
#FFFFFF	7.78	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052A0

Deuteranopia (green-blind)

#1B529B

Tritanopia (blue-blind)

#5A5167

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #663c9d;
/* rgb */ color: rgb(102, 60, 157);
/* oklch */ color: oklch(45.6% 0.152 300.4);

Tailwind

colors: {
  custom: {
    50: '#9574ba',
    500: '#663c9d',
    950: '#000000',
  },
}

SCSS

$custom: #663c9d;
$custom-light: #9574ba;
$custom-dark: #000000;

JSON

{
  "hex": "#663c9d",
  "rgb": {
    "r": 102,
    "g": 60,
    "b": 157
  },
  "hsl": {
    "h": 265.979,
    "s": 44.7,
    "l": 42.549
  },
  "oklch": {
    "l": 0.45624,
    "c": 0.15207,
    "h": 300.4
  },
  "luminance": 0.08491
}

Semantic roles & 50–950 ramp

primary

#663C9D

secondary

#9FBA7B

accent

#D4539D

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #663C9D

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

Preview Lab → · Contrast checker → · Palette generator →