#663BD0#663BD0

#663BD0 is a mid, highly saturated violet. Relative luminance 0.105; OKLCH L 49.5% C 0.214 H 289.4°. Best body text is #FFFFFF at 6.77:1 contrast (WCAG AA passes).

Color values

HEX	#663BD0
RGB	rgb(102, 59, 208)
HSL	hsl(257, 61%, 52%)
HSV	hsv(257, 72%, 82%)
CMYK	cmyk(51%, 71.6%, 0%, 18.4%)
CIE-LAB	lab(38.74, 53.45, -70.25)
CIE-LCH	lch(38.74, 88.27, 307.26°)
OKLab	oklab(49.55% 0.0711 -0.2018)
OKLCH	oklch(49.55% 0.214 289.4)
XYZ	xyz(18.4253, 10.5060, 60.7193)
Luminance	0.1051 (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

#663BD0 #A5D03B

analogous

#3B5BD0 #663BD0 #B03BD0

triadic

#663BD0 #D0663B #3BD066

tetradic

#663BD0 #D03B5B #A5D03B #3BD0B0

square

#663BD0 #D03B5B #A5D03B #3BD0B0

split-complementary

#663BD0 #D0B03B #5BD03B

monochromatic

#361C75 #4C28A6 #663BD0 #8D6CDC #B39EE8

Accessibility & contrast

On white

6.77

#663BD0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#663BD0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663BD0

6.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663BD0	#FFFFFF	#000000	##FFFFFF
##663BD0	1.00	6.77	3.10	6.77
#FFFFFF	6.77	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ED4

Deuteranopia (green-blind)

#0058CD

Tritanopia (blue-blind)

#406282

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #663bd0;
/* rgb */ color: rgb(102, 59, 208);
/* oklch */ color: oklch(49.5% 0.214 289.4);

Tailwind

colors: {
  custom: {
    50: '#9b75e0',
    500: '#663bd0',
    950: '#000000',
  },
}

SCSS

$custom: #663bd0;
$custom-light: #9b75e0;
$custom-dark: #000000;

JSON

{
  "hex": "#663bd0",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 208
  },
  "hsl": {
    "h": 257.315,
    "s": 61.317,
    "l": 52.353
  },
  "oklch": {
    "l": 0.4955,
    "c": 0.21391,
    "h": 289.4
  },
  "luminance": 0.10507
}

Semantic roles & 50–950 ramp

primary

#663BD0

secondary

#C1D493

accent

#E443B6

background

#FAF7FD

surface

#F4EDFB

border

#CEC8D4

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #663BD0

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

Preview Lab → · Contrast checker → · Palette generator →