#663BCC#663BCC

#663BCC is a mid, highly saturated violet. Relative luminance 0.103; OKLCH L 49.2% C 0.209 H 290.1°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#663BCC
RGB	rgb(102, 59, 204)
HSL	hsl(258, 59%, 52%)
HSV	hsv(258, 71%, 80%)
CMYK	cmyk(50%, 71.1%, 0%, 20%)
CIE-LAB	lab(38.40, 52.34, -68.49)
CIE-LCH	lch(38.40, 86.20, 307.39°)
OKLab	oklab(49.21% 0.0719 -0.1966)
OKLCH	oklch(49.21% 0.209 290.1)
XYZ	xyz(17.9394, 10.3116, 58.1601)
Luminance	0.1031 (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

#663BCC #A1CC3B

analogous

#3B59CC #663BCC #AF3BCC

triadic

#663BCC #CC663B #3BCC66

tetradic

#663BCC #CC3B59 #A1CC3B #3BCCAF

square

#663BCC #CC3B59 #A1CC3B #3BCCAF

split-complementary

#663BCC #CCAF3B #59CC3B

monochromatic

#361D70 #4D2AA0 #663BCC #8C6CD9 #B29CE5

Accessibility & contrast

On white

6.86

#663BCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#663BCC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663BCC

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663BCC	#FFFFFF	#000000	##FFFFFF
##663BCC	1.00	6.86	3.06	6.86
#FFFFFF	6.86	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DD0

Deuteranopia (green-blind)

#0057C9

Tritanopia (blue-blind)

#436180

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #663bcc;
/* rgb */ color: rgb(102, 59, 204);
/* oklch */ color: oklch(49.2% 0.209 290.1);

Tailwind

colors: {
  custom: {
    50: '#9b75dd',
    500: '#663bcc',
    950: '#000000',
  },
}

SCSS

$custom: #663bcc;
$custom-light: #9b75dd;
$custom-dark: #000000;

JSON

{
  "hex": "#663bcc",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 204
  },
  "hsl": {
    "h": 257.793,
    "s": 58.704,
    "l": 51.569
  },
  "oklch": {
    "l": 0.49205,
    "c": 0.20934,
    "h": 290.1
  },
  "luminance": 0.10312
}

Semantic roles & 50–950 ramp

primary

#663BCC

secondary

#BED192

accent

#E246B4

background

#FAF7FD

surface

#F4EDFB

border

#CEC8D4

text

#0F0815

muted

#7F7B83

Preview Lab

Preview with #663BCC

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

Preview Lab → · Contrast checker → · Palette generator →