#643BA5#643BA5

#643BA5 is a mid, vivid violet. Relative luminance 0.086; OKLCH L 45.8% C 0.163 H 297.3°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#643BA5
RGB	rgb(100, 59, 165)
HSL	hsl(263, 47%, 44%)
HSV	hsv(263, 64%, 65%)
CMYK	cmyk(39.4%, 64.2%, 0%, 35.3%)
CIE-LAB	lab(35.11, 41.28, -50.84)
CIE-LCH	lch(35.11, 65.49, 309.07°)
OKLab	oklab(45.84% 0.0749 -0.1448)
OKLCH	oklch(45.84% 0.163 297.3)
XYZ	xyz(13.6093, 8.5536, 36.5240)
Luminance	0.0855 (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

#643BA5 #7CA53B

analogous

#3B47A5 #643BA5 #993BA5

triadic

#643BA5 #A5643B #3BA564

tetradic

#643BA5 #A53B47 #7CA53B #3BA599

square

#643BA5 #A53B47 #7CA53B #3BA599

split-complementary

#643BA5 #A5993B #47A53B

monochromatic

#2D1B4B #492B78 #643BA5 #8359C4 #A486D4

Accessibility & contrast

On white

7.75

#643BA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#643BA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643BA5

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643BA5	#FFFFFF	#000000	##FFFFFF
##643BA5	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A8

Deuteranopia (green-blind)

#0051A3

Tritanopia (blue-blind)

#54536A

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #643ba5;
/* rgb */ color: rgb(100, 59, 165);
/* oklch */ color: oklch(45.8% 0.163 297.3);

Tailwind

colors: {
  custom: {
    50: '#9573c0',
    500: '#643ba5',
    950: '#000000',
  },
}

SCSS

$custom: #643ba5;
$custom-light: #9573c0;
$custom-dark: #000000;

JSON

{
  "hex": "#643ba5",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 165
  },
  "hsl": {
    "h": 263.208,
    "s": 47.321,
    "l": 43.922
  },
  "oklch": {
    "l": 0.45842,
    "c": 0.16303,
    "h": 297.3
  },
  "luminance": 0.08554
}

Semantic roles & 50–950 ramp

primary

#643BA5

secondary

#A5BE7E

accent

#D751A3

background

#F9F7FB

surface

#F2EDF7

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643BA5

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

Preview Lab → · Contrast checker → · Palette generator →