#663CB3#663CB3

#663CB3 is a mid, vivid violet. Relative luminance 0.093; OKLCH L 47.3% C 0.179 H 294.8°. Best body text is #FFFFFF at 7.34:1 contrast (WCAG AA passes).

Color values

HEX	#663CB3
RGB	rgb(102, 60, 179)
HSL	hsl(261, 50%, 47%)
HSV	hsv(261, 66%, 70%)
CMYK	cmyk(43%, 66.5%, 0%, 29.8%)
CIE-LAB	lab(36.58, 44.95, -56.80)
CIE-LCH	lch(36.58, 72.44, 308.36°)
OKLab	oklab(47.28% 0.0751 -0.1623)
OKLCH	oklch(47.28% 0.179 294.8)
XYZ	xyz(15.2299, 9.3108, 43.6338)
Luminance	0.0931 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.40

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663CB3 #89B33C

analogous

#3C4EB3 #663CB3 #A23CB3

triadic

#663CB3 #B3663C #3CB366

tetradic

#663CB3 #B33C4E #89B33C #3CB3A2

square

#663CB3 #B33C4E #89B33C #3CB3A2

split-complementary

#663CB3 #B3A23C #4EB33C

monochromatic

#321D57 #4C2D85 #663CB3 #8762CA #AA90DA

Accessibility & contrast

On white

7.34

#663CB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#663CB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663CB3

7.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663CB3	#FFFFFF	#000000	##FFFFFF
##663CB3	1.00	7.34	2.86	7.34
#FFFFFF	7.34	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B7

Deuteranopia (green-blind)

#0054B1

Tritanopia (blue-blind)

#515872

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #663cb3;
/* rgb */ color: rgb(102, 60, 179);
/* oklch */ color: oklch(47.3% 0.179 294.8);

Tailwind

colors: {
  custom: {
    50: '#9874cb',
    500: '#663cb3',
    950: '#000000',
  },
}

SCSS

$custom: #663cb3;
$custom-light: #9874cb;
$custom-dark: #000000;

JSON

{
  "hex": "#663cb3",
  "rgb": {
    "r": 102,
    "g": 60,
    "b": 179
  },
  "hsl": {
    "h": 261.176,
    "s": 49.791,
    "l": 46.863
  },
  "oklch": {
    "l": 0.47279,
    "c": 0.17881,
    "h": 294.8
  },
  "luminance": 0.09311
}

Semantic roles & 50–950 ramp

primary

#663CB3

secondary

#AFC586

accent

#D94EA8

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #663CB3

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

Preview Lab → · Contrast checker → · Palette generator →