#420bbc

Blue Gem

Closest match (93% match)

Color formats

RGB

rgb(66, 11, 188)

Red, Green, Blue components

HSL

hsl(259, 89%, 39%)

Hue, Saturation, Lightness

CMYK

cmyk(65, 94, 0, 26)

Print color encoding

Luminance

0.050

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#420bbc

#85bc0b

Analogous (Adjacent)

#0b2cbc

#420bbc

#9b0bbc

Triadic

#420bbc

#bc420b

#0bbc42

Split complementary

#420bbc

#bc9b0b

#2cbc0b

Complete conversion table

HEX

#420BBC

RGB

rgb(66,11,188)

RGBA

rgba(66,11,188, 1)

HSL

hsl(258.64,88.94%,39.02%)

OKLCH (Modern CSS)

oklch(0.40 0.23 282.0)

CSS Variable

--color: #420bbc;

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

10.47

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

2.01

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#420bbc#595bbc

ORIG

SIM

Deuteranopia (green)

#420bbc#6e67bc

ORIG

SIM

Tritanopia (blue)

#420bbc#3f2225

ORIG

SIM

Monochrome (color blind)

#420bbc#4c3177

Mixing guide

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

MIXING PALETTE

57%

21%

RYB PIGMENTS

Ultramarine blue

Pigment

57%

Cadmium red

Pigment

21%

Ivory black

Pigment

21%

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)

5.0%

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.

Galactic Highway

#3311BB

Busty Blue

#3300CC

Sea Serpent’s Tears

#5511CC

True Blue

#010FCC

Pistachio

#85BC0B

Purple

#9B0BBC

Torea Bay

#0B2CBC

Rock Spray

#BC420B

Malachite

#0BBC42

Buddha Gold

#BC9B0B

Electric Violet

#874BFA

Navy Blue

#000081