#663DB7#663DB7

#663DB7 is a mid, vivid violet. Relative luminance 0.096; OKLCH L 47.7% C 0.182 H 293.8°. Best body text is #FFFFFF at 7.20:1 contrast (WCAG AA passes).

Color values

HEX	#663DB7
RGB	rgb(102, 61, 183)
HSL	hsl(260, 50%, 48%)
HSV	hsv(260, 67%, 72%)
CMYK	cmyk(44.3%, 66.7%, 0%, 28.2%)
CIE-LAB	lab(37.08, 45.51, -58.35)
CIE-LCH	lch(37.08, 74.00, 307.95°)
OKLab	oklab(47.74% 0.0735 -0.1668)
OKLCH	oklch(47.74% 0.182 293.8)
XYZ	xyz(15.6932, 9.5807, 45.8130)
Luminance	0.0958 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.74

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663DB7 #8EB73D

analogous

#3D51B7 #663DB7 #A33DB7

triadic

#663DB7 #B7663D #3DB766

tetradic

#663DB7 #B73D51 #8EB73D #3DB7A3

square

#663DB7 #B73D51 #8EB73D #3DB7A3

split-complementary

#663DB7 #B7A33D #51B73D

monochromatic

#331E5B #4C2E89 #663DB7 #8865CC #AB93DB

Accessibility & contrast

On white

7.20

#663DB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#663DB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663DB7

7.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663DB7	#FFFFFF	#000000	##FFFFFF
##663DB7	1.00	7.20	2.92	7.20
#FFFFFF	7.20	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BB

Deuteranopia (green-blind)

#0055B4

Tritanopia (blue-blind)

#4F5A75

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #663db7;
/* rgb */ color: rgb(102, 61, 183);
/* oklch */ color: oklch(47.7% 0.182 293.8);

Tailwind

colors: {
  custom: {
    50: '#9875cd',
    500: '#663db7',
    950: '#000000',
  },
}

SCSS

$custom: #663db7;
$custom-light: #9875cd;
$custom-dark: #000000;

JSON

{
  "hex": "#663db7",
  "rgb": {
    "r": 102,
    "g": 61,
    "b": 183
  },
  "hsl": {
    "h": 260.164,
    "s": 50,
    "l": 47.843
  },
  "oklch": {
    "l": 0.47737,
    "c": 0.18231,
    "h": 293.8
  },
  "luminance": 0.09581
}

Semantic roles & 50–950 ramp

primary

#663DB7

secondary

#B2C689

accent

#DA4EAB

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0814

muted

#7E7B82

Preview Lab

Preview with #663DB7

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

Preview Lab → · Contrast checker → · Palette generator →