#663FD8#663FD8

#663FD8 is a mid, highly saturated violet. Relative luminance 0.113; OKLCH L 50.8% C 0.219 H 287.6°. Best body text is #FFFFFF at 6.43:1 contrast (WCAG AA passes).

Color values

HEX	#663FD8
RGB	rgb(102, 63, 216)
HSL	hsl(255, 66%, 55%)
HSV	hsv(255, 71%, 85%)
CMYK	cmyk(52.8%, 70.8%, 0%, 15.3%)
CIE-LAB	lab(40.14, 53.65, -72.56)
CIE-LCH	lch(40.14, 90.24, 306.48°)
OKLab	oklab(50.76% 0.0661 -0.2085)
OKLCH	oklch(50.76% 0.219 287.6)
XYZ	xyz(19.6480, 11.3367, 66.1053)
Luminance	0.1134 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663FD8 #B1D83F

analogous

#3F65D8 #663FD8 #B33FD8

triadic

#663FD8 #D8663F #3FD866

tetradic

#663FD8 #D83F65 #B1D83F #3FD8B3

square

#663FD8 #D83F65 #B1D83F #3FD8B3

split-complementary

#663FD8 #D8B33F #65D83F

monochromatic

#351A82 #4A25B5 #663FD8 #8F72E2 #B7A5ED

Accessibility & contrast

On white

6.43

#663FD8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#663FD8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663FD8

6.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FD8	#FFFFFF	#000000	##FFFFFF
##663FD8	1.00	6.43	3.27	6.43
#FFFFFF	6.43	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062DD

Deuteranopia (green-blind)

#005AD5

Tritanopia (blue-blind)

#396887

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #663fd8;
/* rgb */ color: rgb(102, 63, 216);
/* oklch */ color: oklch(50.8% 0.219 287.6);

Tailwind

colors: {
  custom: {
    50: '#9c77e5',
    500: '#663fd8',
    950: '#000000',
  },
}

SCSS

$custom: #663fd8;
$custom-light: #9c77e5;
$custom-dark: #000000;

JSON

{
  "hex": "#663fd8",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 216
  },
  "hsl": {
    "h": 255.294,
    "s": 66.234,
    "l": 54.706
  },
  "oklch": {
    "l": 0.50758,
    "c": 0.21876,
    "h": 287.6
  },
  "luminance": 0.11338
}

Semantic roles & 50–950 ramp

primary

#663FD8

secondary

#C9DA99

accent

#E93FBE

background

#FAF7FE

surface

#F4EDFC

border

#CEC8D5

text

#0F0916

muted

#7F7B84

Preview Lab

Preview with #663FD8

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

Preview Lab → · Contrast checker → · Palette generator →