#663BB4#663BB4

#663BB4 is a mid, vivid violet. Relative luminance 0.092; OKLCH L 47.2% C 0.181 H 294.8°. Best body text is #FFFFFF at 7.37:1 contrast (WCAG AA passes).

Color values

HEX	#663BB4
RGB	rgb(102, 59, 180)
HSL	hsl(261, 51%, 47%)
HSV	hsv(261, 67%, 71%)
CMYK	cmyk(43.3%, 67.2%, 0%, 29.4%)
CIE-LAB	lab(36.46, 45.76, -57.59)
CIE-LCH	lch(36.46, 73.56, 308.47°)
OKLab	oklab(47.22% 0.076 -0.1646)
OKLCH	oklch(47.22% 0.181 294.8)
XYZ	xyz(15.2795, 9.2476, 44.1511)
Luminance	0.0925 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.36

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663BB4 #89B43B

analogous

#3B4DB4 #663BB4 #A33BB4

triadic

#663BB4 #B4663B #3BB466

tetradic

#663BB4 #B43B4D #89B43B #3BB4A3

square

#663BB4 #B43B4D #89B43B #3BB4A3

split-complementary

#663BB4 #B4A33B #4DB43B

monochromatic

#321D58 #4C2C86 #663BB4 #8761CB #AA8FDA

Accessibility & contrast

On white

7.37

#663BB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#663BB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663BB4

7.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663BB4	#FFFFFF	#000000	##FFFFFF
##663BB4	1.00	7.37	2.85	7.37
#FFFFFF	7.37	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B8

Deuteranopia (green-blind)

#0054B2

Tritanopia (blue-blind)

#515872

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #663bb4;
/* rgb */ color: rgb(102, 59, 180);
/* oklch */ color: oklch(47.2% 0.181 294.8);

Tailwind

colors: {
  custom: {
    50: '#9874cb',
    500: '#663bb4',
    950: '#000000',
  },
}

SCSS

$custom: #663bb4;
$custom-light: #9874cb;
$custom-dark: #000000;

JSON

{
  "hex": "#663bb4",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 180
  },
  "hsl": {
    "h": 261.322,
    "s": 50.628,
    "l": 46.863
  },
  "oklch": {
    "l": 0.47218,
    "c": 0.1813,
    "h": 294.8
  },
  "luminance": 0.09248
}

Semantic roles & 50–950 ramp

primary

#663BB4

secondary

#AFC586

accent

#DA4EA8

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #663BB4

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

Preview Lab → · Contrast checker → · Palette generator →