#663FCF#663FCF

#663FCF is a mid, highly saturated violet. Relative luminance 0.109; OKLCH L 50.0% C 0.208 H 289.0°. Best body text is #FFFFFF at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#663FCF
RGB	rgb(102, 63, 207)
HSL	hsl(256, 60%, 53%)
HSV	hsv(256, 70%, 81%)
CMYK	cmyk(50.7%, 69.6%, 0%, 18.8%)
CIE-LAB	lab(39.38, 51.12, -68.61)
CIE-LCH	lch(39.38, 85.56, 306.69°)
OKLab	oklab(49.99% 0.0678 -0.197)
OKLCH	oklch(49.99% 0.208 289)
XYZ	xyz(18.5162, 10.8840, 60.1446)
Luminance	0.1089 (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

#663FCF #A8CF3F

analogous

#3F60CF #663FCF #AE3FCF

triadic

#663FCF #CF663F #3FCF66

tetradic

#663FCF #CF3F60 #A8CF3F #3FCFAE

square

#663FCF #CF3F60 #A8CF3F #3FCFAE

split-complementary

#663FCF #CFAE3F #60CF3F

monochromatic

#361E76 #4C2AA7 #663FCF #8D70DB #B4A1E7

Accessibility & contrast

On white

6.61

#663FCF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#663FCF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663FCF

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FCF	#FFFFFF	#000000	##FFFFFF
##663FCF	1.00	6.61	3.18	6.61
#FFFFFF	6.61	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060D3

Deuteranopia (green-blind)

#0059CC

Tritanopia (blue-blind)

#406482

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #663fcf;
/* rgb */ color: rgb(102, 63, 207);
/* oklch */ color: oklch(50.0% 0.208 289.0);

Tailwind

colors: {
  custom: {
    50: '#9b77df',
    500: '#663fcf',
    950: '#000000',
  },
}

SCSS

$custom: #663fcf;
$custom-light: #9b77df;
$custom-dark: #000000;

JSON

{
  "hex": "#663fcf",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 207
  },
  "hsl": {
    "h": 256.25,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.49986,
    "c": 0.20832,
    "h": 289
  },
  "luminance": 0.10885
}

Semantic roles & 50–950 ramp

primary

#663FCF

secondary

#C3D496

accent

#E345B8

background

#FAF7FD

surface

#F4EDFB

border

#CEC8D4

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #663FCF

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

Preview Lab → · Contrast checker → · Palette generator →