#663CD3#663CD3

#663CD3 is a mid, highly saturated violet. Relative luminance 0.108; OKLCH L 49.9% C 0.216 H 288.8°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#663CD3
RGB	rgb(102, 60, 211)
HSL	hsl(257, 63%, 53%)
HSV	hsv(257, 72%, 83%)
CMYK	cmyk(51.7%, 71.6%, 0%, 17.3%)
CIE-LAB	lab(39.17, 53.77, -71.27)
CIE-LCH	lch(39.17, 89.28, 307.04°)
OKLab	oklab(49.94% 0.0696 -0.2048)
OKLCH	oklch(49.94% 0.216 288.8)
XYZ	xyz(18.8498, 10.7588, 62.6988)
Luminance	0.1076 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 3.34

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663CD3 #A9D33C

analogous

#3C5DD3 #663CD3 #B23CD3

triadic

#663CD3 #D3663C #3CD366

tetradic

#663CD3 #D33C5D #A9D33C #3CD3B2

square

#663CD3 #D33C5D #A9D33C #3CD3B2

split-complementary

#663CD3 #D3B23C #5DD33C

monochromatic

#351B79 #4B27AB #663CD3 #8D6EDE #B4A0EA

Accessibility & contrast

On white

6.66

#663CD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#663CD3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663CD3

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663CD3	#FFFFFF	#000000	##FFFFFF
##663CD3	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FD7

Deuteranopia (green-blind)

#0058D0

Tritanopia (blue-blind)

#3D6484

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #663cd3;
/* rgb */ color: rgb(102, 60, 211);
/* oklch */ color: oklch(49.9% 0.216 288.8);

Tailwind

colors: {
  custom: {
    50: '#9c75e2',
    500: '#663cd3',
    950: '#000000',
  },
}

SCSS

$custom: #663cd3;
$custom-light: #9c75e2;
$custom-dark: #000000;

JSON

{
  "hex": "#663cd3",
  "rgb": {
    "r": 102,
    "g": 60,
    "b": 211
  },
  "hsl": {
    "h": 256.689,
    "s": 63.18,
    "l": 53.137
  },
  "oklch": {
    "l": 0.49938,
    "c": 0.21626,
    "h": 288.8
  },
  "luminance": 0.1076
}

Semantic roles & 50–950 ramp

primary

#663CD3

secondary

#C4D695

accent

#E642B8

background

#FAF7FE

surface

#F4EDFC

border

#CEC8D5

text

#0F0915

muted

#7F7B84

Preview Lab

Preview with #663CD3

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

Preview Lab → · Contrast checker → · Palette generator →