#663BB8#663BB8

#663BB8 is a mid, vivid violet. Relative luminance 0.094; OKLCH L 47.5% C 0.186 H 293.9°. Best body text is #FFFFFF at 7.29:1 contrast (WCAG AA passes).

Color values

HEX	#663BB8
RGB	rgb(102, 59, 184)
HSL	hsl(261, 51%, 48%)
HSV	hsv(261, 68%, 72%)
CMYK	cmyk(44.6%, 67.9%, 0%, 27.8%)
CIE-LAB	lab(36.77, 46.85, -59.45)
CIE-LCH	lch(36.77, 75.69, 308.24°)
OKLab	oklab(47.54% 0.0755 -0.17)
OKLCH	oklch(47.54% 0.186 293.9)
XYZ	xyz(15.6928, 9.4130, 46.3282)
Luminance	0.0941 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.83

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663BB8 #8DB83B

analogous

#3B4FB8 #663BB8 #A43BB8

triadic

#663BB8 #B8663B #3BB866

tetradic

#663BB8 #B83B4F #8DB83B #3BB8A4

square

#663BB8 #B83B4F #8DB83B #3BB8A4

split-complementary

#663BB8 #B8A43B #4FB83B

monochromatic

#331D5B #4C2C8A #663BB8 #8863CD #AB92DC

Accessibility & contrast

On white

7.29

#663BB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#663BB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663BB8

7.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663BB8	#FFFFFF	#000000	##FFFFFF
##663BB8	1.00	7.29	2.88	7.29
#FFFFFF	7.29	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058BC

Deuteranopia (green-blind)

#0054B5

Tritanopia (blue-blind)

#4F5975

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #663bb8;
/* rgb */ color: rgb(102, 59, 184);
/* oklch */ color: oklch(47.5% 0.186 293.9);

Tailwind

colors: {
  custom: {
    50: '#9874ce',
    500: '#663bb8',
    950: '#000000',
  },
}

SCSS

$custom: #663bb8;
$custom-light: #9874ce;
$custom-dark: #000000;

JSON

{
  "hex": "#663bb8",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 184
  },
  "hsl": {
    "h": 260.64,
    "s": 51.44,
    "l": 47.647
  },
  "oklch": {
    "l": 0.47538,
    "c": 0.18604,
    "h": 293.9
  },
  "luminance": 0.09413
}

Semantic roles & 50–950 ramp

primary

#663BB8

secondary

#B1C788

accent

#DB4DAA

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0814

muted

#7E7B82

Preview Lab

Preview with #663BB8

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

Preview Lab → · Contrast checker → · Palette generator →