#663CB4#663CB4

#663CB4 is a mid, vivid violet. Relative luminance 0.094; OKLCH L 47.4% C 0.180 H 294.6°. Best body text is #FFFFFF at 7.32:1 contrast (WCAG AA passes).

Color values

HEX	#663CB4
RGB	rgb(102, 60, 180)
HSL	hsl(261, 50%, 47%)
HSV	hsv(261, 67%, 71%)
CMYK	cmyk(43.3%, 66.7%, 0%, 29.4%)
CIE-LAB	lab(36.65, 45.23, -57.27)
CIE-LCH	lch(36.65, 72.98, 308.30°)
OKLab	oklab(47.36% 0.075 -0.1637)
OKLCH	oklch(47.36% 0.18 294.6)
XYZ	xyz(15.3314, 9.3514, 44.1684)
Luminance	0.0935 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.26

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663CB4 #8AB43C

analogous

#3C4EB4 #663CB4 #A23CB4

triadic

#663CB4 #B4663C #3CB466

tetradic

#663CB4 #B43C4E #8AB43C #3CB4A2

square

#663CB4 #B43C4E #8AB43C #3CB4A2

split-complementary

#663CB4 #B4A23C #4EB43C

monochromatic

#321D58 #4C2D86 #663CB4 #8762CB #AA90DA

Accessibility & contrast

On white

7.32

#663CB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#663CB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663CB4

7.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663CB4	#FFFFFF	#000000	##FFFFFF
##663CB4	1.00	7.32	2.87	7.32
#FFFFFF	7.32	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B8

Deuteranopia (green-blind)

#0054B2

Tritanopia (blue-blind)

#515973

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #663cb4;
/* rgb */ color: rgb(102, 60, 180);
/* oklch */ color: oklch(47.4% 0.180 294.6);

Tailwind

colors: {
  custom: {
    50: '#9874cb',
    500: '#663cb4',
    950: '#000000',
  },
}

SCSS

$custom: #663cb4;
$custom-light: #9874cb;
$custom-dark: #000000;

JSON

{
  "hex": "#663cb4",
  "rgb": {
    "r": 102,
    "g": 60,
    "b": 180
  },
  "hsl": {
    "h": 261,
    "s": 50,
    "l": 47.059
  },
  "oklch": {
    "l": 0.47358,
    "c": 0.18001,
    "h": 294.6
  },
  "luminance": 0.09352
}

Semantic roles & 50–950 ramp

primary

#663CB4

secondary

#AFC587

accent

#DA4EA9

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #663CB4

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

Preview Lab → · Contrast checker → · Palette generator →