#663BC8#663BC8

#663BC8 is a mid, highly saturated violet. Relative luminance 0.101; OKLCH L 48.9% C 0.205 H 290.8°. Best body text is #FFFFFF at 6.94:1 contrast (WCAG AA passes).

Color values

HEX	#663BC8
RGB	rgb(102, 59, 200)
HSL	hsl(258, 56%, 51%)
HSV	hsv(258, 71%, 78%)
CMYK	cmyk(49%, 70.5%, 0%, 21.6%)
CIE-LAB	lab(38.06, 51.24, -66.71)
CIE-LCH	lch(38.06, 84.12, 307.53°)
OKLab	oklab(48.86% 0.0727 -0.1914)
OKLCH	oklch(48.86% 0.205 290.8)
XYZ	xyz(17.4658, 10.1222, 55.6659)
Luminance	0.1012 (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

#663BC8 #9DC83B

analogous

#3B56C8 #663BC8 #AC3BC8

triadic

#663BC8 #C8663B #3BC866

tetradic

#663BC8 #C83B56 #9DC83B #3BC8AC

square

#663BC8 #C83B56 #9DC83B #3BC8AC

split-complementary

#663BC8 #C8AC3B #56C83B

monochromatic

#351E6B #4D2B9A #663BC8 #8B6BD5 #B19BE3

Accessibility & contrast

On white

6.94

#663BC8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#663BC8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663BC8

6.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663BC8	#FFFFFF	#000000	##FFFFFF
##663BC8	1.00	6.94	3.02	6.94
#FFFFFF	6.94	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CCC

Deuteranopia (green-blind)

#0056C5

Tritanopia (blue-blind)

#455F7D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #663bc8;
/* rgb */ color: rgb(102, 59, 200);
/* oklch */ color: oklch(48.9% 0.205 290.8);

Tailwind

colors: {
  custom: {
    50: '#9a74da',
    500: '#663bc8',
    950: '#000000',
  },
}

SCSS

$custom: #663bc8;
$custom-light: #9a74da;
$custom-dark: #000000;

JSON

{
  "hex": "#663bc8",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 200
  },
  "hsl": {
    "h": 258.298,
    "s": 56.175,
    "l": 50.784
  },
  "oklch": {
    "l": 0.48863,
    "c": 0.20473,
    "h": 290.8
  },
  "luminance": 0.10123
}

Semantic roles & 50–950 ramp

primary

#663BC8

secondary

#BCCF90

accent

#DF48B1

background

#FAF7FD

surface

#F3EDFB

border

#CDC8D4

text

#0F0815

muted

#7F7B83

Preview Lab

Preview with #663BC8

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

Preview Lab → · Contrast checker → · Palette generator →