#663F7A#663F7A

#663F7A is a dark, moderate violet. Relative luminance 0.078; OKLCH L 43.9% C 0.103 H 313.3°. Best body text is #FFFFFF at 8.21:1 contrast (WCAG AA passes).

Color values

HEX	#663F7A
RGB	rgb(102, 63, 122)
HSL	hsl(280, 32%, 36%)
HSV	hsv(280, 48%, 48%)
CMYK	cmyk(16.4%, 48.4%, 0%, 52.2%)
CIE-LAB	lab(33.53, 28.45, -27.03)
CIE-LCH	lch(33.53, 39.24, 316.46°)
OKLab	oklab(43.87% 0.0707 -0.0751)
OKLCH	oklch(43.87% 0.103 313.3)
XYZ	xyz(10.7693, 7.7852, 19.3440)
Luminance	0.0779 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663F7A #537A3F

analogous

#493F7A #663F7A #7A3F71

triadic

#663F7A #7A663F #3F7A66

tetradic

#663F7A #7A493F #537A3F #3F717A

square

#663F7A #7A493F #537A3F #3F717A

split-complementary

#663F7A #717A3F #3F7A49

monochromatic

#231529 #442A52 #663F7A #8854A2 #A479BA

Accessibility & contrast

On white

8.21

#663F7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#663F7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663F7A

8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663F7A	#FFFFFF	#000000	##FFFFFF
##663F7A	1.00	8.21	2.56	8.21
#FFFFFF	8.21	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#334D7C

Deuteranopia (green-blind)

#3D5078

Tritanopia (blue-blind)

#644856

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #663f7a;
/* rgb */ color: rgb(102, 63, 122);
/* oklch */ color: oklch(43.9% 0.103 313.3);

Tailwind

colors: {
  custom: {
    50: '#9375a0',
    500: '#663f7a',
    950: '#000000',
  },
}

SCSS

$custom: #663f7a;
$custom-light: #9375a0;
$custom-dark: #000000;

JSON

{
  "hex": "#663f7a",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 122
  },
  "hsl": {
    "h": 279.661,
    "s": 31.892,
    "l": 36.275
  },
  "oklch": {
    "l": 0.43869,
    "c": 0.10318,
    "h": 313.3
  },
  "luminance": 0.07785
}

Semantic roles & 50–950 ramp

primary

#663F7A

secondary

#82A470

accent

#C86083

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080F

muted

#7E7B7E

Preview Lab

Preview with #663F7A

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

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