#643d8a

Affair

Closest match (96% match)

Color formats

RGB

rgb(100, 61, 138)

Red, Green, Blue components

HSL

hsl(270, 39%, 39%)

Hue, Saturation, Lightness

CMYK

cmyk(28, 56, 0, 46)

Print color encoding

Luminance

0.079

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#643d8a

#638a3d

Analogous (Adjacent)

#3d3d8a

#643d8a

#8a3d8a

Triadic

#643d8a

#8a643d

#3d8a64

Split complementary

#643d8a

#8a8a3d

#3d8a3d

Complete conversion table

HEX

#643D8A

RGB

rgb(100,61,138)

RGBA

rgba(100,61,138, 1)

HSL

hsl(270.39,38.69%,39.02%)

OKLCH (Modern CSS)

oklch(0.44 0.13 305.2)

CSS Variable

--color: #643d8a;

Preview

Readability and Typography

Headline Test

This text demonstrates the reading experience on this background color.

Headline Test

This text demonstrates the reading experience on this background color.

UI Component Set

This is an example alert bar using the selected color.

SOLIDSOFTOUTLINE

Product Mockup

4582 •••• •••• 9018

CARDHOLDER

JOHN DOE

VALID

12/28

Mobile application

Customer support

Hi! How can we help you today?

I love this new color! 😍

Data visualization

Weekly growth

+1,240

12.5%

WED

2,450

Contrast

Contrast and readability (WCAG)

On white background

8.15

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

2.58

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#643d8a#5f608a

ORIG

SIM

Deuteranopia (green)

#643d8a#716f8a

ORIG

SIM

Tritanopia (blue)

#643d8a#62484f

ORIG

SIM

Monochrome (color blind)

#643d8a#4f4f4f

Mixing guide

How to mix this color using physical paints or printing inks.

MIXING PALETTE

38%

37%

26%

RYB PIGMENTS

Ultramarine blue

Pigment

38%

Ivory black

Pigment

37%

Cadmium red

Pigment

26%

Unlike light, mixing paints makes colors darker. This simulation mimics the behavior of physical pigments.

Physical properties

Perceptual and light-related properties derived from the digital color.

Spectral relationship

Violet hue

380–450 nm • closest visible-spectrum range

750 nm

380 nm

Visual temperature

Cool

A perceptual warm–cool classification. Kelvin does not apply to an arbitrary interface color.

Cool

Neutral

Warm

Luminance (brightness)

7.9%

Dark • relative luminance

50%

100%

An RGB color is produced by combined screen light, so this range is a visual comparison rather than an exact physical wavelength.

Gradient gallery

Generate premium CSS backgrounds and textures from your color.

Similar & Related Colors

Mathematically computed harmonies, shades, and similar tones for this color.

Lords of the Night

#664488

Kingfisher Daisy

#583580

Perkin Mauve

#733C8E

Poppy Pompadour

#6B3FA0

Fern Green

#638A3D

Plum

#8A3D8A

Victoria

#3E3D8A

Potters Clay

#8A643D

Viridian

#3D8A64

Sycamore

#8A8A3D

Amethyst

#9D72C4

Violent Violet

#2D0B53