#663FB3#663FB3

#663FB3 is a mid, vivid violet. Relative luminance 0.096; OKLCH L 47.7% C 0.175 H 294.3°. Best body text is #FFFFFF at 7.18:1 contrast (WCAG AA passes).

Color values

HEX	#663FB3
RGB	rgb(102, 63, 179)
HSL	hsl(260, 48%, 47%)
HSV	hsv(260, 65%, 70%)
CMYK	cmyk(43%, 64.8%, 0%, 29.8%)
CIE-LAB	lab(37.18, 43.32, -55.83)
CIE-LCH	lch(37.18, 70.66, 307.81°)
OKLab	oklab(47.71% 0.0718 -0.1594)
OKLCH	oklch(47.71% 0.175 294.3)
XYZ	xyz(15.3915, 9.6341, 43.6877)
Luminance	0.0963 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663FB3 #8CB33F

analogous

#3F52B3 #663FB3 #A03FB3

triadic

#663FB3 #B3663F #3FB366

tetradic

#663FB3 #B33F52 #8CB33F #3FB3A0

square

#663FB3 #B33F52 #8CB33F #3FB3A0

split-complementary

#663FB3 #B3A03F #52B33F

monochromatic

#321F58 #4C2F86 #663FB3 #8766C9 #AB93D9

Accessibility & contrast

On white

7.18

#663FB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#663FB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663FB3

7.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FB3	#FFFFFF	#000000	##FFFFFF
##663FB3	1.00	7.18	2.93	7.18
#FFFFFF	7.18	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059B7

Deuteranopia (green-blind)

#0056B1

Tritanopia (blue-blind)

#515A73

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #663fb3;
/* rgb */ color: rgb(102, 63, 179);
/* oklch */ color: oklch(47.7% 0.175 294.3);

Tailwind

colors: {
  custom: {
    50: '#9876cb',
    500: '#663fb3',
    950: '#000000',
  },
}

SCSS

$custom: #663fb3;
$custom-light: #9876cb;
$custom-dark: #000000;

JSON

{
  "hex": "#663fb3",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 179
  },
  "hsl": {
    "h": 260.172,
    "s": 47.934,
    "l": 47.451
  },
  "oklch": {
    "l": 0.47713,
    "c": 0.17486,
    "h": 294.3
  },
  "luminance": 0.09634
}

Semantic roles & 50–950 ramp

primary

#663FB3

secondary

#B1C489

accent

#D850AA

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0913

muted

#7E7B82

Preview Lab

Preview with #663FB3

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

Preview Lab → · Contrast checker → · Palette generator →