#663CC4#663CC4

#663CC4 is a mid, vivid violet. Relative luminance 0.100; OKLCH L 48.7% C 0.199 H 291.4°. Best body text is #FFFFFF at 6.98:1 contrast (WCAG AA passes).

Color values

HEX	#663CC4
RGB	rgb(102, 60, 196)
HSL	hsl(259, 54%, 50%)
HSV	hsv(259, 69%, 77%)
CMYK	cmyk(48%, 69.4%, 0%, 23.1%)
CIE-LAB	lab(37.92, 49.62, -64.62)
CIE-LCH	lch(37.92, 81.47, 307.52°)
OKLab	oklab(48.66% 0.0725 -0.1852)
OKLCH	oklch(48.66% 0.199 291.4)
XYZ	xyz(17.0563, 10.0414, 53.2533)
Luminance	0.1004 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663CC4 #9AC43C

analogous

#3C56C4 #663CC4 #AA3CC4

triadic

#663CC4 #C4663C #3CC466

tetradic

#663CC4 #C43C56 #9AC43C #3CC4AA

square

#663CC4 #C43C56 #9AC43C #3CC4AA

split-complementary

#663CC4 #C4AA3C #56C43C

monochromatic

#351F67 #4D2D96 #663CC4 #8B6BD2 #B09AE0

Accessibility & contrast

On white

6.98

#663CC4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#663CC4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663CC4

6.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663CC4	#FFFFFF	#000000	##FFFFFF
##663CC4	1.00	6.98	3.01	6.98
#FFFFFF	6.98	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BC8

Deuteranopia (green-blind)

#0056C1

Tritanopia (blue-blind)

#485E7B

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #663cc4;
/* rgb */ color: rgb(102, 60, 196);
/* oklch */ color: oklch(48.7% 0.199 291.4);

Tailwind

colors: {
  custom: {
    50: '#9a75d7',
    500: '#663cc4',
    950: '#000000',
  },
}

SCSS

$custom: #663cc4;
$custom-light: #9a75d7;
$custom-dark: #000000;

JSON

{
  "hex": "#663cc4",
  "rgb": {
    "r": 102,
    "g": 60,
    "b": 196
  },
  "hsl": {
    "h": 258.529,
    "s": 53.543,
    "l": 50.196
  },
  "oklch": {
    "l": 0.48659,
    "c": 0.19892,
    "h": 291.4
  },
  "luminance": 0.10042
}

Semantic roles & 50–950 ramp

primary

#663CC4

secondary

#BACC90

accent

#DD4BB0

background

#FAF7FD

surface

#F3EDFA

border

#CDC8D3

text

#0F0814

muted

#7F7B83

Preview Lab

Preview with #663CC4

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

Preview Lab → · Contrast checker → · Palette generator →