#663BCB#663BCB

#663BCB is a mid, highly saturated violet. Relative luminance 0.103; OKLCH L 49.1% C 0.208 H 290.3°. Best body text is #FFFFFF at 6.88:1 contrast (WCAG AA passes).

Color values

HEX	#663BCB
RGB	rgb(102, 59, 203)
HSL	hsl(258, 58%, 51%)
HSV	hsv(258, 71%, 80%)
CMYK	cmyk(49.8%, 70.9%, 0%, 20.4%)
CIE-LAB	lab(38.31, 52.07, -68.05)
CIE-LCH	lch(38.31, 85.68, 307.42°)
OKLab	oklab(49.12% 0.0721 -0.1953)
OKLCH	oklch(49.12% 0.208 290.3)
XYZ	xyz(17.8199, 10.2638, 57.5305)
Luminance	0.1027 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663BCB #A0CB3B

analogous

#3B58CB #663BCB #AE3BCB

triadic

#663BCB #CB663B #3BCB66

tetradic

#663BCB #CB3B58 #A0CB3B #3BCBAE

square

#663BCB #CB3B58 #A0CB3B #3BCBAE

split-complementary

#663BCB #CBAE3B #58CB3B

monochromatic

#351D6E #4D2A9F #663BCB #8C6BD8 #B29CE5

Accessibility & contrast

On white

6.88

#663BCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#663BCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663BCB

6.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663BCB	#FFFFFF	#000000	##FFFFFF
##663BCB	1.00	6.88	3.05	6.88
#FFFFFF	6.88	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DCF

Deuteranopia (green-blind)

#0057C8

Tritanopia (blue-blind)

#43617F

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #663bcb;
/* rgb */ color: rgb(102, 59, 203);
/* oklch */ color: oklch(49.1% 0.208 290.3);

Tailwind

colors: {
  custom: {
    50: '#9b75dc',
    500: '#663bcb',
    950: '#000000',
  },
}

SCSS

$custom: #663bcb;
$custom-light: #9b75dc;
$custom-dark: #000000;

JSON

{
  "hex": "#663bcb",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 203
  },
  "hsl": {
    "h": 257.917,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.49119,
    "c": 0.20819,
    "h": 290.3
  },
  "luminance": 0.10265
}

Semantic roles & 50–950 ramp

primary

#663BCB

secondary

#BED191

accent

#E147B3

background

#FAF7FD

surface

#F4EDFB

border

#CEC8D4

text

#0F0815

muted

#7F7B83

Preview Lab

Preview with #663BCB

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

Preview Lab → · Contrast checker → · Palette generator →