#663FC3#663FC3

#663FC3 is a mid, vivid violet. Relative luminance 0.103; OKLCH L 49.0% C 0.194 H 291.1°. Best body text is #FFFFFF at 6.85:1 contrast (WCAG AA passes).

Color values

HEX	#663FC3
RGB	rgb(102, 63, 195)
HSL	hsl(258, 52%, 51%)
HSV	hsv(258, 68%, 76%)
CMYK	cmyk(47.7%, 67.7%, 0%, 23.5%)
CIE-LAB	lab(38.41, 47.77, -63.23)
CIE-LCH	lch(38.41, 79.24, 307.07°)
OKLab	oklab(48.99% 0.0698 -0.1812)
OKLCH	oklch(48.99% 0.194 291.1)
XYZ	xyz(17.1045, 10.3193, 52.7098)
Luminance	0.1032 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 1.06

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663FC3 #9CC33F

analogous

#3F5AC3 #663FC3 #A83FC3

triadic

#663FC3 #C3663F #3FC366

tetradic

#663FC3 #C33F5A #9CC33F #3FC3A8

square

#663FC3 #C33F5A #9CC33F #3FC3A8

split-complementary

#663FC3 #C3A83F #5AC33F

monochromatic

#352067 #4D2F96 #663FC3 #8B6ED2 #B09CE0

Accessibility & contrast

On white

6.85

#663FC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#663FC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663FC3

6.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FC3	#FFFFFF	#000000	##FFFFFF
##663FC3	1.00	6.85	3.06	6.85
#FFFFFF	6.85	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DC7

Deuteranopia (green-blind)

#0058C0

Tritanopia (blue-blind)

#48607C

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #663fc3;
/* rgb */ color: rgb(102, 63, 195);
/* oklch */ color: oklch(49.0% 0.194 291.1);

Tailwind

colors: {
  custom: {
    50: '#9977d6',
    500: '#663fc3',
    950: '#000000',
  },
}

SCSS

$custom: #663fc3;
$custom-light: #9977d6;
$custom-dark: #000000;

JSON

{
  "hex": "#663fc3",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 195
  },
  "hsl": {
    "h": 257.727,
    "s": 52.381,
    "l": 50.588
  },
  "oklch": {
    "l": 0.48986,
    "c": 0.19416,
    "h": 291.1
  },
  "luminance": 0.1032
}

Semantic roles & 50–950 ramp

primary

#663FC3

secondary

#BBCC92

accent

#DC4CB1

background

#F9F7FD

surface

#F2EDFA

border

#CCC8D3

text

#0F0914

muted

#7E7B83

Preview Lab

Preview with #663FC3

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

Preview Lab → · Contrast checker → · Palette generator →