#663EB7#663EB7

#663EB7 is a mid, vivid violet. Relative luminance 0.097; OKLCH L 47.9% C 0.181 H 293.6°. Best body text is #FFFFFF at 7.15:1 contrast (WCAG AA passes).

Color values

HEX	#663EB7
RGB	rgb(102, 62, 183)
HSL	hsl(260, 49%, 48%)
HSV	hsv(260, 66%, 72%)
CMYK	cmyk(44.3%, 66.1%, 0%, 28.2%)
CIE-LAB	lab(37.28, 44.97, -58.03)
CIE-LCH	lch(37.28, 73.41, 307.77°)
OKLab	oklab(47.88% 0.0725 -0.1659)
OKLCH	oklch(47.88% 0.181 293.6)
XYZ	xyz(15.7470, 9.6885, 45.8309)
Luminance	0.0969 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.65

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663EB7 #8FB73E

analogous

#3E52B7 #663EB7 #A33EB7

triadic

#663EB7 #B7663E #3EB766

tetradic

#663EB7 #B73E52 #8FB73E #3EB7A3

square

#663EB7 #B73E52 #8FB73E #3EB7A3

split-complementary

#663EB7 #B7A33E #52B73E

monochromatic

#331F5C #4D2F89 #663EB7 #8867CB #AC94DB

Accessibility & contrast

On white

7.15

#663EB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#663EB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663EB7

7.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663EB7	#FFFFFF	#000000	##FFFFFF
##663EB7	1.00	7.15	2.94	7.15
#FFFFFF	7.15	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BB

Deuteranopia (green-blind)

#0056B5

Tritanopia (blue-blind)

#4F5B75

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #663eb7;
/* rgb */ color: rgb(102, 62, 183);
/* oklch */ color: oklch(47.9% 0.181 293.6);

Tailwind

colors: {
  custom: {
    50: '#9876cd',
    500: '#663eb7',
    950: '#000000',
  },
}

SCSS

$custom: #663eb7;
$custom-light: #9876cd;
$custom-dark: #000000;

JSON

{
  "hex": "#663eb7",
  "rgb": {
    "r": 102,
    "g": 62,
    "b": 183
  },
  "hsl": {
    "h": 259.835,
    "s": 49.388,
    "l": 48.039
  },
  "oklch": {
    "l": 0.4788,
    "c": 0.18103,
    "h": 293.6
  },
  "luminance": 0.09689
}

Semantic roles & 50–950 ramp

primary

#663EB7

secondary

#B3C68A

accent

#D94FAB

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0914

muted

#7E7B82

Preview Lab

Preview with #663EB7

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

Preview Lab → · Contrast checker → · Palette generator →