#663ECB#663ECB

#663ECB is a mid, highly saturated violet. Relative luminance 0.106; OKLCH L 49.5% C 0.205 H 289.8°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#663ECB
RGB	rgb(102, 62, 203)
HSL	hsl(257, 58%, 52%)
HSV	hsv(257, 69%, 80%)
CMYK	cmyk(49.8%, 69.5%, 0%, 20.4%)
CIE-LAB	lab(38.87, 50.53, -67.14)
CIE-LCH	lch(38.87, 84.03, 306.96°)
OKLab	oklab(49.51% 0.0694 -0.1927)
OKLCH	oklch(49.51% 0.205 289.8)
XYZ	xyz(17.9785, 10.5811, 57.5834)
Luminance	0.1058 (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

#663ECB #A3CB3E

analogous

#3E5DCB #663ECB #AC3ECB

triadic

#663ECB #CB663E #3ECB66

tetradic

#663ECB #CB3E5D #A3CB3E #3ECBAC

square

#663ECB #CB3E5D #A3CB3E #3ECBAC

split-complementary

#663ECB #CBAC3E #5DCB3E

monochromatic

#361E70 #4D2BA1 #663ECB #8C6ED8 #B29EE5

Accessibility & contrast

On white

6.74

#663ECB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#663ECB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663ECB

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663ECB	#FFFFFF	#000000	##FFFFFF
##663ECB	1.00	6.74	3.12	6.74
#FFFFFF	6.74	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ECF

Deuteranopia (green-blind)

#0058C8

Tritanopia (blue-blind)

#436280

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #663ecb;
/* rgb */ color: rgb(102, 62, 203);
/* oklch */ color: oklch(49.5% 0.205 289.8);

Tailwind

colors: {
  custom: {
    50: '#9b76dc',
    500: '#663ecb',
    950: '#000000',
  },
}

SCSS

$custom: #663ecb;
$custom-light: #9b76dc;
$custom-dark: #000000;

JSON

{
  "hex": "#663ecb",
  "rgb": {
    "r": 102,
    "g": 62,
    "b": 203
  },
  "hsl": {
    "h": 257.021,
    "s": 57.551,
    "l": 51.961
  },
  "oklch": {
    "l": 0.49514,
    "c": 0.20478,
    "h": 289.8
  },
  "luminance": 0.10582
}

Semantic roles & 50–950 ramp

primary

#663ECB

secondary

#C0D194

accent

#E147B5

background

#FAF7FD

surface

#F4EDFB

border

#CEC8D4

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #663ECB

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

Preview Lab → · Contrast checker → · Palette generator →