#663BB5#663BB5

#663BB5 is a mid, vivid violet. Relative luminance 0.093; OKLCH L 47.3% C 0.182 H 294.6°. Best body text is #FFFFFF at 7.35:1 contrast (WCAG AA passes).

Color values

HEX	#663BB5
RGB	rgb(102, 59, 181)
HSL	hsl(261, 51%, 47%)
HSV	hsv(261, 67%, 71%)
CMYK	cmyk(43.6%, 67.4%, 0%, 29%)
CIE-LAB	lab(36.53, 46.03, -58.06)
CIE-LCH	lch(36.53, 74.09, 308.41°)
OKLab	oklab(47.3% 0.0759 -0.166)
OKLCH	oklch(47.3% 0.182 294.6)
XYZ	xyz(15.3817, 9.2885, 44.6895)
Luminance	0.0929 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.22

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663BB5 #8AB53B

analogous

#3B4DB5 #663BB5 #A33BB5

triadic

#663BB5 #B5663B #3BB566

tetradic

#663BB5 #B53B4D #8AB53B #3BB5A3

square

#663BB5 #B53B4D #8AB53B #3BB5A3

split-complementary

#663BB5 #B5A33B #4DB53B

monochromatic

#321D59 #4C2C87 #663BB5 #8762CC #AA90DB

Accessibility & contrast

On white

7.35

#663BB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#663BB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663BB5

7.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663BB5	#FFFFFF	#000000	##FFFFFF
##663BB5	1.00	7.35	2.86	7.35
#FFFFFF	7.35	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B9

Deuteranopia (green-blind)

#0054B3

Tritanopia (blue-blind)

#505873

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #663bb5;
/* rgb */ color: rgb(102, 59, 181);
/* oklch */ color: oklch(47.3% 0.182 294.6);

Tailwind

colors: {
  custom: {
    50: '#9874cc',
    500: '#663bb5',
    950: '#000000',
  },
}

SCSS

$custom: #663bb5;
$custom-light: #9874cc;
$custom-dark: #000000;

JSON

{
  "hex": "#663bb5",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 181
  },
  "hsl": {
    "h": 261.148,
    "s": 50.833,
    "l": 47.059
  },
  "oklch": {
    "l": 0.47297,
    "c": 0.18248,
    "h": 294.6
  },
  "luminance": 0.09289
}

Semantic roles & 50–950 ramp

primary

#663BB5

secondary

#AFC686

accent

#DA4DA9

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #663BB5

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

Preview Lab → · Contrast checker → · Palette generator →