#663DCC#663DCC

#663DCC is a mid, highly saturated violet. Relative luminance 0.105; OKLCH L 49.5% C 0.207 H 289.8°. Best body text is #FFFFFF at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#663DCC
RGB	rgb(102, 61, 204)
HSL	hsl(257, 58%, 52%)
HSV	hsv(257, 70%, 80%)
CMYK	cmyk(50%, 70.1%, 0%, 20%)
CIE-LAB	lab(38.76, 51.32, -67.89)
CIE-LCH	lch(38.76, 85.11, 307.09°)
OKLab	oklab(49.47% 0.0701 -0.1949)
OKLCH	oklch(49.47% 0.207 289.8)
XYZ	xyz(18.0442, 10.5211, 58.1951)
Luminance	0.1052 (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

#663DCC #A3CC3D

analogous

#3D5CCC #663DCC #AE3DCC

triadic

#663DCC #CC663D #3DCC66

tetradic

#663DCC #CC3D5C #A3CC3D #3DCCAE

square

#663DCC #CC3D5C #A3CC3D #3DCCAE

split-complementary

#663DCC #CCAE3D #5CCC3D

monochromatic

#361E71 #4D2AA1 #663DCC #8C6DD9 #B29EE5

Accessibility & contrast

On white

6.76

#663DCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#663DCC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663DCC

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663DCC	#FFFFFF	#000000	##FFFFFF
##663DCC	1.00	6.76	3.10	6.76
#FFFFFF	6.76	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ED0

Deuteranopia (green-blind)

#0058C9

Tritanopia (blue-blind)

#426280

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #663dcc;
/* rgb */ color: rgb(102, 61, 204);
/* oklch */ color: oklch(49.5% 0.207 289.8);

Tailwind

colors: {
  custom: {
    50: '#9b76dd',
    500: '#663dcc',
    950: '#000000',
  },
}

SCSS

$custom: #663dcc;
$custom-light: #9b76dd;
$custom-dark: #000000;

JSON

{
  "hex": "#663dcc",
  "rgb": {
    "r": 102,
    "g": 61,
    "b": 204
  },
  "hsl": {
    "h": 257.203,
    "s": 58.367,
    "l": 51.961
  },
  "oklch": {
    "l": 0.49465,
    "c": 0.20709,
    "h": 289.8
  },
  "luminance": 0.10522
}

Semantic roles & 50–950 ramp

primary

#663DCC

secondary

#C0D293

accent

#E246B5

background

#FAF7FD

surface

#F4EDFB

border

#CEC8D4

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #663DCC

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

Preview Lab → · Contrast checker → · Palette generator →