#643DCC#643DCC

#643DCC is a mid, highly saturated violet. Relative luminance 0.104; OKLCH L 49.3% C 0.207 H 289.0°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#643DCC
RGB	rgb(100, 61, 204)
HSL	hsl(256, 58%, 52%)
HSV	hsv(256, 70%, 80%)
CMYK	cmyk(51%, 70.1%, 0%, 20%)
CIE-LAB	lab(38.56, 51.00, -68.23)
CIE-LCH	lch(38.56, 85.18, 306.78°)
OKLab	oklab(49.28% 0.0673 -0.1959)
OKLCH	oklch(49.28% 0.207 289)
XYZ	xyz(17.8202, 10.4056, 58.1846)
Luminance	0.1041 (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

#643DCC #A5CC3D

analogous

#3D5ECC #643DCC #AC3DCC

triadic

#643DCC #CC643D #3DCC64

tetradic

#643DCC #CC3D5E #A5CC3D #3DCCAC

square

#643DCC #CC3D5E #A5CC3D #3DCCAC

split-complementary

#643DCC #CCAC3D #5ECC3D

monochromatic

#341E71 #4B2AA1 #643DCC #8B6DD9 #B19EE5

Accessibility & contrast

On white

6.82

#643DCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#643DCC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #643DCC

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643DCC	#FFFFFF	#000000	##FFFFFF
##643DCC	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ED0

Deuteranopia (green-blind)

#0057C9

Tritanopia (blue-blind)

#3E6280

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #643dcc;
/* rgb */ color: rgb(100, 61, 204);
/* oklch */ color: oklch(49.3% 0.207 289.0);

Tailwind

colors: {
  custom: {
    50: '#9a76dd',
    500: '#643dcc',
    950: '#000000',
  },
}

SCSS

$custom: #643dcc;
$custom-light: #9a76dd;
$custom-dark: #000000;

JSON

{
  "hex": "#643dcc",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 204
  },
  "hsl": {
    "h": 256.364,
    "s": 58.367,
    "l": 51.961
  },
  "oklch": {
    "l": 0.49275,
    "c": 0.20714,
    "h": 289
  },
  "luminance": 0.10406
}

Semantic roles & 50–950 ramp

primary

#643DCC

secondary

#C1D293

accent

#E246B7

background

#FAF7FD

surface

#F3EDFB

border

#CDC8D4

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #643DCC

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

Preview Lab → · Contrast checker → · Palette generator →