#663EB5#663EB5

#663EB5 is a mid, vivid violet. Relative luminance 0.096; OKLCH L 47.7% C 0.179 H 294.0°. Best body text is #FFFFFF at 7.19:1 contrast (WCAG AA passes).

Color values

HEX	#663EB5
RGB	rgb(102, 62, 181)
HSL	hsl(260, 49%, 48%)
HSV	hsv(260, 66%, 71%)
CMYK	cmyk(43.6%, 65.7%, 0%, 29%)
CIE-LAB	lab(37.13, 44.42, -57.09)
CIE-LCH	lch(37.13, 72.34, 307.88°)
OKLab	oklab(47.72% 0.0727 -0.1631)
OKLCH	oklch(47.72% 0.179 294)
XYZ	xyz(15.5404, 9.6058, 44.7424)
Luminance	0.0961 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.94

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663EB5 #8DB53E

analogous

#3E52B5 #663EB5 #A13EB5

triadic

#663EB5 #B5663E #3EB566

tetradic

#663EB5 #B53E52 #8DB53E #3EB5A1

square

#663EB5 #B53E52 #8DB53E #3EB5A1

split-complementary

#663EB5 #B5A13E #52B53E

monochromatic

#331F5A #4C2E87 #663EB5 #8866CA #AB93DA

Accessibility & contrast

On white

7.19

#663EB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#663EB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663EB5

7.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663EB5	#FFFFFF	#000000	##FFFFFF
##663EB5	1.00	7.19	2.92	7.19
#FFFFFF	7.19	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059B9

Deuteranopia (green-blind)

#0055B3

Tritanopia (blue-blind)

#505A74

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #663eb5;
/* rgb */ color: rgb(102, 62, 181);
/* oklch */ color: oklch(47.7% 0.179 294.0);

Tailwind

colors: {
  custom: {
    50: '#9876cc',
    500: '#663eb5',
    950: '#000000',
  },
}

SCSS

$custom: #663eb5;
$custom-light: #9876cc;
$custom-dark: #000000;

JSON

{
  "hex": "#663eb5",
  "rgb": {
    "r": 102,
    "g": 62,
    "b": 181
  },
  "hsl": {
    "h": 260.168,
    "s": 48.971,
    "l": 47.647
  },
  "oklch": {
    "l": 0.47723,
    "c": 0.17861,
    "h": 294
  },
  "luminance": 0.09606
}

Semantic roles & 50–950 ramp

primary

#663EB5

secondary

#B1C589

accent

#D94FAA

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #663EB5

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

Preview Lab → · Contrast checker → · Palette generator →