#4e51cf

Indigo

Closest match (92% match)

Color formats

RGB

rgb(78, 81, 207)

Red, Green, Blue components

HSL

hsl(239, 57%, 56%)

Hue, Saturation, Lightness

CMYK

cmyk(62, 61, 0, 19)

Print color encoding

Luminance

0.120

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#4e51cf

#cfcc4e

Analogous (Adjacent)

#4e91cf

#4e51cf

#8b4ecf

Triadic

#4e51cf

#cf4e51

#51cf4e

Split complementary

#4e51cf

#cf8b4e

#92cf4e

Complete conversion table

HEX

#4E51CF

RGB

rgb(78,81,207)

RGBA

rgba(78,81,207, 1)

HSL

hsl(238.6,57.33%,55.88%)

OKLCH (Modern CSS)

oklch(0.51 0.19 276.2)

CSS Variable

--color: #4e51cf;

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

6.17

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

3.40

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#4e51cf#888acf

ORIG

SIM

Deuteranopia (green)

#4e51cf#7d75cf

ORIG

SIM

Tritanopia (blue)

#4e51cf#4e4850

ORIG

SIM

Monochrome (color blind)

#4e51cf#635d80

Mixing guide

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

MIXING PALETTE

81%

19%

RYB PIGMENTS

Ultramarine blue

Pigment

81%

Titanium white

Pigment

19%

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)

12.0%

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

Savoy Blue

#4B61D1

Opulent Blue

#0055EE

Frosted Blueberries

#0055DD

Turmeric

#CFCC4E

Amethyst

#8B4ECF

Danube

#4E92CF

Chestnut Rose

#CF4E51

Emerald

#51CF4E

Raw Sienna

#CF8B4E

Melrose

#9087FF

Resolution Blue

#002193