#663DCB#663DCB

#663DCB is a mid, highly saturated violet. Relative luminance 0.105; OKLCH L 49.4% C 0.206 H 290.0°. Best body text is #FFFFFF at 6.79:1 contrast (WCAG AA passes).

Color values

HEX	#663DCB
RGB	rgb(102, 61, 203)
HSL	hsl(257, 58%, 52%)
HSV	hsv(257, 70%, 80%)
CMYK	cmyk(49.8%, 70%, 0%, 20.4%)
CIE-LAB	lab(38.68, 51.05, -67.45)
CIE-LCH	lch(38.68, 84.59, 307.12°)
OKLab	oklab(49.38% 0.0703 -0.1935)
OKLCH	oklch(49.38% 0.206 290)
XYZ	xyz(17.9246, 10.4733, 57.5654)
Luminance	0.1047 (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

#663DCB #A2CB3D

analogous

#3D5BCB #663DCB #AD3DCB

triadic

#663DCB #CB663D #3DCB66

tetradic

#663DCB #CB3D5B #A2CB3D #3DCBAD

square

#663DCB #CB3D5B #A2CB3D #3DCBAD

split-complementary

#663DCB #CBAD3D #5BCB3D

monochromatic

#361E70 #4D2BA0 #663DCB #8C6DD8 #B29EE5

Accessibility & contrast

On white

6.79

#663DCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#663DCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663DCB

6.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663DCB	#FFFFFF	#000000	##FFFFFF
##663DCB	1.00	6.79	3.09	6.79
#FFFFFF	6.79	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ECF

Deuteranopia (green-blind)

#0058C8

Tritanopia (blue-blind)

#436280

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #663dcb;
/* rgb */ color: rgb(102, 61, 203);
/* oklch */ color: oklch(49.4% 0.206 290.0);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#663dcb",
  "rgb": {
    "r": 102,
    "g": 61,
    "b": 203
  },
  "hsl": {
    "h": 257.324,
    "s": 57.724,
    "l": 51.765
  },
  "oklch": {
    "l": 0.4938,
    "c": 0.20592,
    "h": 290
  },
  "luminance": 0.10474
}

Semantic roles & 50–950 ramp

primary

#663DCB

secondary

#BFD193

accent

#E147B4

background

#FAF7FD

surface

#F4EDFB

border

#CEC8D4

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #663DCB

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

Preview Lab → · Contrast checker → · Palette generator →