#663FB9#663FB9

#663FB9 is a mid, vivid violet. Relative luminance 0.099; OKLCH L 48.2% C 0.182 H 293.0°. Best body text is #FFFFFF at 7.06:1 contrast (WCAG AA passes).

Color values

HEX	#663FB9
RGB	rgb(102, 63, 185)
HSL	hsl(259, 49%, 49%)
HSV	hsv(259, 66%, 73%)
CMYK	cmyk(44.9%, 65.9%, 0%, 27.5%)
CIE-LAB	lab(37.63, 44.98, -58.63)
CIE-LCH	lch(37.63, 73.90, 307.49°)
OKLab	oklab(48.18% 0.0712 -0.1677)
OKLCH	oklch(48.18% 0.182 293)
XYZ	xyz(16.0116, 9.8821, 46.9533)
Luminance	0.0988 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.30

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663FB9 #92B93F

analogous

#3F55B9 #663FB9 #A33FB9

triadic

#663FB9 #B9663F #3FB966

tetradic

#663FB9 #B93F55 #92B93F #3FB9A3

square

#663FB9 #B93F55 #92B93F #3FB9A3

split-complementary

#663FB9 #B9A33F #55B93F

monochromatic

#34205E #4D2F8B #663FB9 #8969CC #AD97DC

Accessibility & contrast

On white

7.06

#663FB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#663FB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663FB9

7.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FB9	#FFFFFF	#000000	##FFFFFF
##663FB9	1.00	7.06	2.98	7.06
#FFFFFF	7.06	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ABD

Deuteranopia (green-blind)

#0056B6

Tritanopia (blue-blind)

#4E5C76

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #663fb9;
/* rgb */ color: rgb(102, 63, 185);
/* oklch */ color: oklch(48.2% 0.182 293.0);

Tailwind

colors: {
  custom: {
    50: '#9876cf',
    500: '#663fb9',
    950: '#000000',
  },
}

SCSS

$custom: #663fb9;
$custom-light: #9876cf;
$custom-dark: #000000;

JSON

{
  "hex": "#663fb9",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 185
  },
  "hsl": {
    "h": 259.18,
    "s": 49.194,
    "l": 48.627
  },
  "oklch": {
    "l": 0.48182,
    "c": 0.18215,
    "h": 293
  },
  "luminance": 0.09883
}

Semantic roles & 50–950 ramp

primary

#663FB9

secondary

#B4C78D

accent

#D94FAD

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0914

muted

#7E7B82

Preview Lab

Preview with #663FB9

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

Preview Lab → · Contrast checker → · Palette generator →