#663BC7#663BC7

#663BC7 is a mid, highly saturated violet. Relative luminance 0.101; OKLCH L 48.8% C 0.204 H 291.0°. Best body text is #FFFFFF at 6.96:1 contrast (WCAG AA passes).

Color values

HEX	#663BC7
RGB	rgb(102, 59, 199)
HSL	hsl(258, 56%, 51%)
HSV	hsv(258, 70%, 78%)
CMYK	cmyk(48.7%, 70.4%, 0%, 22%)
CIE-LAB	lab(37.98, 50.97, -66.27)
CIE-LCH	lch(37.98, 83.60, 307.56°)
OKLab	oklab(48.78% 0.0729 -0.1901)
OKLCH	oklch(48.78% 0.204 291)
XYZ	xyz(17.3493, 10.0756, 55.0524)
Luminance	0.1008 (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

#663BC7 #9CC73B

analogous

#3B56C7 #663BC7 #AC3BC7

triadic

#663BC7 #C7663B #3BC766

tetradic

#663BC7 #C73B56 #9CC73B #3BC7AC

square

#663BC7 #C73B56 #9CC73B #3BC7AC

split-complementary

#663BC7 #C7AC3B #56C73B

monochromatic

#351E69 #4D2C99 #663BC7 #8B6BD5 #B09AE2

Accessibility & contrast

On white

6.96

#663BC7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#663BC7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663BC7

6.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663BC7	#FFFFFF	#000000	##FFFFFF
##663BC7	1.00	6.96	3.02	6.96
#FFFFFF	6.96	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CCB

Deuteranopia (green-blind)

#0056C4

Tritanopia (blue-blind)

#465F7D

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #663bc7;
/* rgb */ color: rgb(102, 59, 199);
/* oklch */ color: oklch(48.8% 0.204 291.0);

Tailwind

colors: {
  custom: {
    50: '#9a74d9',
    500: '#663bc7',
    950: '#000000',
  },
}

SCSS

$custom: #663bc7;
$custom-light: #9a74d9;
$custom-dark: #000000;

JSON

{
  "hex": "#663bc7",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 199
  },
  "hsl": {
    "h": 258.429,
    "s": 55.556,
    "l": 50.588
  },
  "oklch": {
    "l": 0.48779,
    "c": 0.20357,
    "h": 291
  },
  "luminance": 0.10076
}

Semantic roles & 50–950 ramp

primary

#663BC7

secondary

#BBCE90

accent

#DF49B1

background

#FAF7FD

surface

#F3EDFB

border

#CDC8D4

text

#0F0815

muted

#7F7B83

Preview Lab

Preview with #663BC7

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

Preview Lab → · Contrast checker → · Palette generator →