#663DB4#663DB4

#663DB4 is a mid, vivid violet. Relative luminance 0.095; OKLCH L 47.5% C 0.179 H 294.4°. Best body text is #FFFFFF at 7.26:1 contrast (WCAG AA passes).

Color values

HEX	#663DB4
RGB	rgb(102, 61, 180)
HSL	hsl(261, 49%, 47%)
HSV	hsv(261, 66%, 71%)
CMYK	cmyk(43.3%, 66.1%, 0%, 29.4%)
CIE-LAB	lab(36.85, 44.69, -56.95)
CIE-LCH	lch(36.85, 72.39, 308.12°)
OKLab	oklab(47.5% 0.0739 -0.1627)
OKLCH	oklch(47.5% 0.179 294.4)
XYZ	xyz(15.3842, 9.4572, 44.1860)
Luminance	0.0946 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.16

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663DB4 #8BB43D

analogous

#3D50B4 #663DB4 #A23DB4

triadic

#663DB4 #B4663D #3DB466

tetradic

#663DB4 #B43D50 #8BB43D #3DB4A2

square

#663DB4 #B43D50 #8BB43D #3DB4A2

split-complementary

#663DB4 #B4A23D #50B43D

monochromatic

#321E59 #4C2E86 #663DB4 #8764CA #AA92DA

Accessibility & contrast

On white

7.26

#663DB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#663DB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663DB4

7.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663DB4	#FFFFFF	#000000	##FFFFFF
##663DB4	1.00	7.26	2.89	7.26
#FFFFFF	7.26	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B8

Deuteranopia (green-blind)

#0055B2

Tritanopia (blue-blind)

#515973

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #663db4;
/* rgb */ color: rgb(102, 61, 180);
/* oklch */ color: oklch(47.5% 0.179 294.4);

Tailwind

colors: {
  custom: {
    50: '#9875cb',
    500: '#663db4',
    950: '#000000',
  },
}

SCSS

$custom: #663db4;
$custom-light: #9875cb;
$custom-dark: #000000;

JSON

{
  "hex": "#663db4",
  "rgb": {
    "r": 102,
    "g": 61,
    "b": 180
  },
  "hsl": {
    "h": 260.672,
    "s": 49.378,
    "l": 47.255
  },
  "oklch": {
    "l": 0.475,
    "c": 0.17871,
    "h": 294.4
  },
  "luminance": 0.09458
}

Semantic roles & 50–950 ramp

primary

#663DB4

secondary

#B0C588

accent

#D94FA9

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #663DB4

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

Preview Lab → · Contrast checker → · Palette generator →