#663eb4

Studio

Closest match (96% match)

Color formats

RGB

rgb(102, 62, 180)

Red, Green, Blue components

HSL

hsl(260, 49%, 47%)

Hue, Saturation, Lightness

CMYK

cmyk(43, 66, 0, 29)

Print color encoding

Luminance

0.096

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#663eb4

#8cb43e

Analogous (Adjacent)

#3e51b4

#663eb4

#a13eb4

Triadic

#663eb4

#b4663e

#3eb466

Split complementary

#663eb4

#b4a13e

#51b43e

Complete conversion table

HEX

#663EB4

RGB

rgb(102,62,180)

RGBA

rgba(102,62,180, 1)

HSL

hsl(260.34,48.76%,47.45%)

OKLCH (Modern CSS)

oklch(0.48 0.18 294.2)

CSS Variable

--color: #663eb4;

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

7.21

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

2.91

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#663eb4#7273b4

ORIG

SIM

Deuteranopia (green)

#663eb4#827db4

ORIG

SIM

Tritanopia (blue)

#663eb4#644951

ORIG

SIM

Monochrome (color blind)

#663eb4#5e526e

Mixing guide

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

MIXING PALETTE

65%

26%

RYB PIGMENTS

Ultramarine blue

Pigment

65%

Cadmium red

Pigment

26%

Ivory black

Pigment

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)

9.6%

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.

Purple Emperor

#6633BB

Poppy Pompadour

#6B3FA0

Purple Rain

#7442C8

Royalty

#5930A9

Sushi

#8CB43E

Vivid Violet

#A13EB4

San Marino

#3E51B4

Brown Rust

#B4663E

Chateau Green

#3EB466

Roti

#B4A13E

Portage

#A374F1

Deep Blue

#27087A