#663CBB#663CBB

#663CBB is a mid, vivid violet. Relative luminance 0.096; OKLCH L 47.9% C 0.188 H 293.1°. Best body text is #FFFFFF at 7.17:1 contrast (WCAG AA passes).

Color values

HEX	#663CBB
RGB	rgb(102, 60, 187)
HSL	hsl(260, 51%, 48%)
HSV	hsv(260, 68%, 73%)
CMYK	cmyk(45.5%, 67.9%, 0%, 26.7%)
CIE-LAB	lab(37.20, 47.14, -60.52)
CIE-LCH	lch(37.20, 76.71, 307.92°)
OKLab	oklab(47.92% 0.074 -0.1732)
OKLCH	oklch(47.92% 0.188 293.1)
XYZ	xyz(16.0625, 9.6439, 48.0192)
Luminance	0.0964 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.33

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663CBB #91BB3C

analogous

#3C51BB #663CBB #A53CBB

triadic

#663CBB #BB663C #3CBB66

tetradic

#663CBB #BB3C51 #91BB3C #3CBBA5

square

#663CBB #BB3C51 #91BB3C #3CBBA5

split-complementary

#663CBB #BBA53C #51BB3C

monochromatic

#331E5E #4D2D8D #663CBB #8966CE #AC95DD

Accessibility & contrast

On white

7.17

#663CBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#663CBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663CBB

7.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663CBB	#FFFFFF	#000000	##FFFFFF
##663CBB	1.00	7.17	2.93	7.17
#FFFFFF	7.17	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BF

Deuteranopia (green-blind)

#0055B8

Tritanopia (blue-blind)

#4D5B77

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #663cbb;
/* rgb */ color: rgb(102, 60, 187);
/* oklch */ color: oklch(47.9% 0.188 293.1);

Tailwind

colors: {
  custom: {
    50: '#9975d0',
    500: '#663cbb',
    950: '#000000',
  },
}

SCSS

$custom: #663cbb;
$custom-light: #9975d0;
$custom-dark: #000000;

JSON

{
  "hex": "#663cbb",
  "rgb": {
    "r": 102,
    "g": 60,
    "b": 187
  },
  "hsl": {
    "h": 259.843,
    "s": 51.417,
    "l": 48.431
  },
  "oklch": {
    "l": 0.47918,
    "c": 0.18834,
    "h": 293.1
  },
  "luminance": 0.09644
}

Semantic roles & 50–950 ramp

primary

#663CBB

secondary

#B4C88B

accent

#DB4DAC

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0F0814

muted

#7E7B82

Preview Lab

Preview with #663CBB

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

Preview Lab → · Contrast checker → · Palette generator →