#663EC5#663EC5

#663EC5 is a mid, vivid violet. Relative luminance 0.103; OKLCH L 49.0% C 0.198 H 290.9°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#663EC5
RGB	rgb(102, 62, 197)
HSL	hsl(258, 54%, 51%)
HSV	hsv(258, 69%, 77%)
CMYK	cmyk(48.2%, 68.5%, 0%, 22.7%)
CIE-LAB	lab(38.38, 48.85, -64.45)
CIE-LCH	lch(38.38, 80.87, 307.16°)
OKLab	oklab(49.01% 0.0704 -0.1848)
OKLCH	oklch(49.01% 0.198 290.9)
XYZ	xyz(17.2773, 10.3006, 53.8904)
Luminance	0.1030 (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

#663EC5 #9DC53E

analogous

#3E59C5 #663EC5 #AA3EC5

triadic

#663EC5 #C5663E #3EC566

tetradic

#663EC5 #C53E59 #9DC53E #3EC5AA

square

#663EC5 #C53E59 #9DC53E #3EC5AA

split-complementary

#663EC5 #C5AA3E #59C53E

monochromatic

#352069 #4D2E98 #663EC5 #8B6DD3 #B19CE1

Accessibility & contrast

On white

6.86

#663EC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#663EC5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663EC5

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663EC5	#FFFFFF	#000000	##FFFFFF
##663EC5	1.00	6.86	3.06	6.86
#FFFFFF	6.86	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DC9

Deuteranopia (green-blind)

#0057C2

Tritanopia (blue-blind)

#47607D

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #663ec5;
/* rgb */ color: rgb(102, 62, 197);
/* oklch */ color: oklch(49.0% 0.198 290.9);

Tailwind

colors: {
  custom: {
    50: '#9a76d8',
    500: '#663ec5',
    950: '#000000',
  },
}

SCSS

$custom: #663ec5;
$custom-light: #9a76d8;
$custom-dark: #000000;

JSON

{
  "hex": "#663ec5",
  "rgb": {
    "r": 102,
    "g": 62,
    "b": 197
  },
  "hsl": {
    "h": 257.778,
    "s": 53.785,
    "l": 50.784
  },
  "oklch": {
    "l": 0.49012,
    "c": 0.19773,
    "h": 290.9
  },
  "luminance": 0.10301
}

Semantic roles & 50–950 ramp

primary

#663EC5

secondary

#BCCD91

accent

#DD4BB2

background

#FAF7FD

surface

#F3EDFA

border

#CDC8D3

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #663EC5

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

Preview Lab → · Contrast checker → · Palette generator →