#663ECF#663ECF

#663ECF is a mid, highly saturated violet. Relative luminance 0.108; OKLCH L 49.9% C 0.209 H 289.1°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#663ECF
RGB	rgb(102, 62, 207)
HSL	hsl(257, 60%, 53%)
HSV	hsv(257, 70%, 81%)
CMYK	cmyk(50.7%, 70%, 0%, 18.8%)
CIE-LAB	lab(39.20, 51.64, -68.92)
CIE-LCH	lch(39.20, 86.12, 306.85°)
OKLab	oklab(49.85% 0.0687 -0.1979)
OKLCH	oklch(49.85% 0.209 289.1)
XYZ	xyz(18.4613, 10.7742, 60.1263)
Luminance	0.1077 (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

#663ECF #A7CF3E

analogous

#3E5ECF #663ECF #AF3ECF

triadic

#663ECF #CF663E #3ECF66

tetradic

#663ECF #CF3E5E #A7CF3E #3ECFAF

square

#663ECF #CF3E5E #A7CF3E #3ECFAF

split-complementary

#663ECF #CFAF3E #5ECF3E

monochromatic

#361D75 #4C29A6 #663ECF #8D6FDB #B4A0E7

Accessibility & contrast

On white

6.66

#663ECF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#663ECF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663ECF

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663ECF	#FFFFFF	#000000	##FFFFFF
##663ECF	1.00	6.66	3.16	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FD3

Deuteranopia (green-blind)

#0059CC

Tritanopia (blue-blind)

#406482

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #663ecf;
/* rgb */ color: rgb(102, 62, 207);
/* oklch */ color: oklch(49.9% 0.209 289.1);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#663ecf",
  "rgb": {
    "r": 102,
    "g": 62,
    "b": 207
  },
  "hsl": {
    "h": 256.552,
    "s": 60.166,
    "l": 52.745
  },
  "oklch": {
    "l": 0.49853,
    "c": 0.20945,
    "h": 289.1
  },
  "luminance": 0.10775
}

Semantic roles & 50–950 ramp

primary

#663ECF

secondary

#C2D495

accent

#E344B7

background

#FAF7FD

surface

#F4EDFB

border

#CEC8D4

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #663ECF

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

Preview Lab → · Contrast checker → · Palette generator →