#663D7A#663D7A

#663D7A is a dark, moderate purple. Relative luminance 0.076; OKLCH L 43.5% C 0.107 H 313.7°. Best body text is #FFFFFF at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#663D7A
RGB	rgb(102, 61, 122)
HSL	hsl(280, 33%, 36%)
HSV	hsv(280, 50%, 48%)
CMYK	cmyk(16.4%, 50%, 0%, 52.2%)
CIE-LAB	lab(33.07, 29.64, -27.77)
CIE-LCH	lch(33.07, 40.61, 316.87°)
OKLab	oklab(43.52% 0.0739 -0.0772)
OKLCH	oklch(43.52% 0.107 313.7)
XYZ	xyz(10.6605, 7.5677, 19.3077)
Luminance	0.0757 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663D7A #517A3D

analogous

#473D7A #663D7A #7A3D6F

triadic

#663D7A #7A663D #3D7A66

tetradic

#663D7A #7A473D #517A3D #3D6F7A

square

#663D7A #7A473D #517A3D #3D6F7A

split-complementary

#663D7A #6F7A3D #3D7A47

monochromatic

#221428 #442951 #663D7A #8851A3 #A477BB

Accessibility & contrast

On white

8.36

#663D7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#663D7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663D7A

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663D7A	#FFFFFF	#000000	##FFFFFF
##663D7A	1.00	8.36	2.51	8.36
#FFFFFF	8.36	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304B7C

Deuteranopia (green-blind)

#3C4F78

Tritanopia (blue-blind)

#644656

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #663d7a;
/* rgb */ color: rgb(102, 61, 122);
/* oklch */ color: oklch(43.5% 0.107 313.7);

Tailwind

colors: {
  custom: {
    50: '#9374a1',
    500: '#663d7a',
    950: '#000000',
  },
}

SCSS

$custom: #663d7a;
$custom-light: #9374a1;
$custom-dark: #000000;

JSON

{
  "hex": "#663d7a",
  "rgb": {
    "r": 102,
    "g": 61,
    "b": 122
  },
  "hsl": {
    "h": 280.328,
    "s": 33.333,
    "l": 35.882
  },
  "oklch": {
    "l": 0.43522,
    "c": 0.10685,
    "h": 313.7
  },
  "luminance": 0.07567
}

Semantic roles & 50–950 ramp

primary

#663D7A

secondary

#80A56E

accent

#C95E81

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080F

muted

#7E7B7E

Preview Lab

Preview with #663D7A

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

Preview Lab → · Contrast checker → · Palette generator →