#663E83#663E83

#663E83 is a dark, moderate violet. Relative luminance 0.079; OKLCH L 44.2% C 0.116 H 309.2°. Best body text is #FFFFFF at 8.13:1 contrast (WCAG AA passes).

Color values

HEX	#663E83
RGB	rgb(102, 62, 131)
HSL	hsl(275, 36%, 38%)
HSV	hsv(275, 53%, 51%)
CMYK	cmyk(22.1%, 52.7%, 0%, 48.6%)
CIE-LAB	lab(33.79, 31.22, -32.22)
CIE-LCH	lch(33.79, 44.86, 314.10°)
OKLab	oklab(44.22% 0.0735 -0.0902)
OKLCH	oklch(44.22% 0.116 309.2)
XYZ	xyz(11.2981, 7.9089, 22.3997)
Luminance	0.0791 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663E83 #5B833E

analogous

#443E83 #663E83 #833E7D

triadic

#663E83 #83663E #3E8366

tetradic

#663E83 #83443E #5B833E #3E7D83

square

#663E83 #83443E #5B833E #3E7D83

split-complementary

#663E83 #7D833E #3E8344

monochromatic

#251730 #462A59 #663E83 #8652AD #A37BC0

Accessibility & contrast

On white

8.13

#663E83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#663E83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663E83

8.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663E83	#FFFFFF	#000000	##FFFFFF
##663E83	1.00	8.13	2.58	8.13
#FFFFFF	8.13	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B4E85

Deuteranopia (green-blind)

#375081

Tritanopia (blue-blind)

#624A5A

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #663e83;
/* rgb */ color: rgb(102, 62, 131);
/* oklch */ color: oklch(44.2% 0.116 309.2);

Tailwind

colors: {
  custom: {
    50: '#9375a7',
    500: '#663e83',
    950: '#000000',
  },
}

SCSS

$custom: #663e83;
$custom-light: #9375a7;
$custom-dark: #000000;

JSON

{
  "hex": "#663e83",
  "rgb": {
    "r": 102,
    "g": 62,
    "b": 131
  },
  "hsl": {
    "h": 274.783,
    "s": 35.751,
    "l": 37.843
  },
  "oklch": {
    "l": 0.44224,
    "c": 0.1163,
    "h": 309.2
  },
  "luminance": 0.07909
}

Semantic roles & 50–950 ramp

primary

#663E83

secondary

#8AAB72

accent

#CC5C8B

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #663E83

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

Preview Lab → · Contrast checker → · Palette generator →