#663AD5#663AD5

#663AD5 is a mid, highly saturated violet. Relative luminance 0.107; OKLCH L 49.9% C 0.221 H 288.7°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#663AD5
RGB	rgb(102, 58, 213)
HSL	hsl(257, 65%, 53%)
HSV	hsv(257, 73%, 84%)
CMYK	cmyk(52.1%, 72.8%, 0%, 16.5%)
CIE-LAB	lab(38.99, 55.32, -72.72)
CIE-LCH	lch(38.99, 91.36, 307.26°)
OKLab	oklab(49.86% 0.0708 -0.209)
OKLCH	oklch(49.86% 0.221 288.7)
XYZ	xyz(18.9993, 10.6541, 63.9932)
Luminance	0.1066 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 3.46

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663AD5 #A9D53A

analogous

#3A5BD5 #663AD5 #B33AD5

triadic

#663AD5 #D5663A #3AD566

tetradic

#663AD5 #D53A5B #A9D53A #3AD5B3

square

#663AD5 #D53A5B #A9D53A #3AD5B3

split-complementary

#663AD5 #D5B33A #5BD53A

monochromatic

#351A7A #4B25AD #663AD5 #8D6CE0 #B49FEB

Accessibility & contrast

On white

6.71

#663AD5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#663AD5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663AD5

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663AD5	#FFFFFF	#000000	##FFFFFF
##663AD5	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FD9

Deuteranopia (green-blind)

#0058D2

Tritanopia (blue-blind)

#3C6484

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #663ad5;
/* rgb */ color: rgb(102, 58, 213);
/* oklch */ color: oklch(49.9% 0.221 288.7);

Tailwind

colors: {
  custom: {
    50: '#9c74e3',
    500: '#663ad5',
    950: '#000000',
  },
}

SCSS

$custom: #663ad5;
$custom-light: #9c74e3;
$custom-dark: #000000;

JSON

{
  "hex": "#663ad5",
  "rgb": {
    "r": 102,
    "g": 58,
    "b": 213
  },
  "hsl": {
    "h": 257.032,
    "s": 64.854,
    "l": 53.137
  },
  "oklch": {
    "l": 0.49864,
    "c": 0.22065,
    "h": 288.7
  },
  "luminance": 0.10655
}

Semantic roles & 50–950 ramp

primary

#663AD5

secondary

#C4D794

accent

#E840B8

background

#FAF7FE

surface

#F4EDFC

border

#CEC8D5

text

#0F0816

muted

#7F7B84

Preview Lab

Preview with #663AD5

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

Preview Lab → · Contrast checker → · Palette generator →