#5b51ca

Indigo

Closest match (91% match)

Color formats

RGB

rgb(91, 81, 202)

Red, Green, Blue components

HSL

hsl(245, 53%, 55%)

Hue, Saturation, Lightness

CMYK

cmyk(55, 60, 0, 21)

Print color encoding

Luminance

0.124

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#5b51ca

#c0ca51

Analogous (Adjacent)

#5183ca

#5b51ca

#9751ca

Triadic

#5b51ca

#ca5b51

#51ca5b

Split complementary

#5b51ca

#ca9751

#84ca51

Complete conversion table

HEX

#5B51CA

RGB

rgb(91,81,202)

RGBA

rgba(91,81,202, 1)

HSL

hsl(244.96,53.3%,55.49%)

OKLCH (Modern CSS)

oklch(0.51 0.18 281.7)

CSS Variable

--color: #5b51ca;

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

6.04

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

3.47

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#5b51ca#8687ca

ORIG

SIM

Deuteranopia (green)

#5b51ca#837cca

ORIG

SIM

Tritanopia (blue)

#5b51ca#5b4d56

ORIG

SIM

Monochrome (color blind)

#5b51ca#665f7c

Mixing guide

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

MIXING PALETTE

75%

18%

RYB PIGMENTS

Ultramarine blue

Pigment

75%

Titanium white

Pigment

18%

Cadmium red

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

Blue hue

450–495 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)

12.4%

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.

Warm Blue

#4B57DB

Purple Rain

#7442C8

Savoy Blue

#4B61D1

Simply Purple

#715BB1

Turmeric

#C0CA51

Amethyst

#9751CA

Danube

#5183CA

Chestnut Rose

#CA5B51

Emerald

#51CA5B

Tussock

#CA9851

Heliotrope

#9A87FF

Catalina Blue

#06208F