#663CD5#663CD5

#663CD5 is a mid, highly saturated violet. Relative luminance 0.109; OKLCH L 50.1% C 0.219 H 288.4°. Best body text is #FFFFFF at 6.62:1 contrast (WCAG AA passes).

Color values

HEX	#663CD5
RGB	rgb(102, 60, 213)
HSL	hsl(256, 65%, 54%)
HSV	hsv(256, 72%, 84%)
CMYK	cmyk(52.1%, 71.8%, 0%, 16.5%)
CIE-LAB	lab(39.34, 54.33, -72.14)
CIE-LCH	lch(39.34, 90.31, 306.98°)
OKLab	oklab(50.11% 0.0692 -0.2073)
OKLCH	oklch(50.11% 0.219 288.4)
XYZ	xyz(19.1021, 10.8597, 64.0275)
Luminance	0.1086 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 3.48

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663CD5 #ABD53C

analogous

#3C5ED5 #663CD5 #B33CD5

triadic

#663CD5 #D5663C #3CD566

tetradic

#663CD5 #D53C5E #ABD53C #3CD5B3

square

#663CD5 #D53C5E #ABD53C #3CD5B3

split-complementary

#663CD5 #D5B33C #5ED53C

monochromatic

#351B7C #4B26AE #663CD5 #8E6EE0 #B5A1EB

Accessibility & contrast

On white

6.62

#663CD5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#663CD5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663CD5

6.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663CD5	#FFFFFF	#000000	##FFFFFF
##663CD5	1.00	6.62	3.17	6.62
#FFFFFF	6.62	1.00	21.00	1.00
#000000	3.17	21.00	1.00	21.00
##FFFFFF	6.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060D9

Deuteranopia (green-blind)

#0059D2

Tritanopia (blue-blind)

#3B6585

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #663cd5;
/* rgb */ color: rgb(102, 60, 213);
/* oklch */ color: oklch(50.1% 0.219 288.4);

Tailwind

colors: {
  custom: {
    50: '#9c76e3',
    500: '#663cd5',
    950: '#000000',
  },
}

SCSS

$custom: #663cd5;
$custom-light: #9c76e3;
$custom-dark: #000000;

JSON

{
  "hex": "#663cd5",
  "rgb": {
    "r": 102,
    "g": 60,
    "b": 213
  },
  "hsl": {
    "h": 256.471,
    "s": 64.557,
    "l": 53.529
  },
  "oklch": {
    "l": 0.50113,
    "c": 0.21855,
    "h": 288.4
  },
  "luminance": 0.10861
}

Semantic roles & 50–950 ramp

primary

#663CD5

secondary

#C5D796

accent

#E840BA

background

#FAF7FE

surface

#F4EDFC

border

#CEC8D5

text

#0F0916

muted

#7F7B84

Preview Lab

Preview with #663CD5

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

Preview Lab → · Contrast checker → · Palette generator →