#663FC7#663FC7

#663FC7 is a mid, vivid violet. Relative luminance 0.105; OKLCH L 49.3% C 0.199 H 290.3°. Best body text is #FFFFFF at 6.77:1 contrast (WCAG AA passes).

Color values

HEX	#663FC7
RGB	rgb(102, 63, 199)
HSL	hsl(257, 55%, 51%)
HSV	hsv(257, 68%, 78%)
CMYK	cmyk(48.7%, 68.3%, 0%, 22%)
CIE-LAB	lab(38.73, 48.88, -65.04)
CIE-LCH	lch(38.73, 81.36, 306.93°)
OKLab	oklab(49.32% 0.0692 -0.1865)
OKLCH	oklch(49.32% 0.199 290.3)
XYZ	xyz(17.5629, 10.5026, 55.1236)
Luminance	0.1050 (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

#663FC7 #A0C73F

analogous

#3F5CC7 #663FC7 #AA3FC7

triadic

#663FC7 #C7663F #3FC766

tetradic

#663FC7 #C73F5C #A0C73F #3FC7AA

square

#663FC7 #C73F5C #A0C73F #3FC7AA

split-complementary

#663FC7 #C7AA3F #5CC73F

monochromatic

#35206C #4D2D9B #663FC7 #8C6ED5 #B29EE3

Accessibility & contrast

On white

6.77

#663FC7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#663FC7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663FC7

6.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FC7	#FFFFFF	#000000	##FFFFFF
##663FC7	1.00	6.77	3.10	6.77
#FFFFFF	6.77	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ECB

Deuteranopia (green-blind)

#0058C4

Tritanopia (blue-blind)

#46617E

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #663fc7;
/* rgb */ color: rgb(102, 63, 199);
/* oklch */ color: oklch(49.3% 0.199 290.3);

Tailwind

colors: {
  custom: {
    50: '#9a77d9',
    500: '#663fc7',
    950: '#000000',
  },
}

SCSS

$custom: #663fc7;
$custom-light: #9a77d9;
$custom-dark: #000000;

JSON

{
  "hex": "#663fc7",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 199
  },
  "hsl": {
    "h": 257.206,
    "s": 54.839,
    "l": 51.373
  },
  "oklch": {
    "l": 0.49315,
    "c": 0.1989,
    "h": 290.3
  },
  "luminance": 0.10503
}

Semantic roles & 50–950 ramp

primary

#663FC7

secondary

#BECF93

accent

#DE4AB4

background

#FAF7FD

surface

#F3EDFB

border

#CDC8D4

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #663FC7

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

Preview Lab → · Contrast checker → · Palette generator →