#2a178a

Persian Indigo

Closest match (97% match)

Color formats

RGB

rgb(42, 23, 138)

Red, Green, Blue components

HSL

hsl(250, 71%, 32%)

Hue, Saturation, Lightness

CMYK

cmyk(70, 83, 0, 46)

Print color encoding

Luminance

0.029

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#2a178a

#778a17

Analogous (Adjacent)

#173d8a

#2a178a

#63178a

Triadic

#2a178a

#8a2a17

#178a2a

Split complementary

#2a178a

#8a6317

#3e8a17

Complete conversion table

HEX

#2A178A

RGB

rgb(42,23,138)

RGBA

rgba(42,23,138, 1)

HSL

hsl(249.91,71.43%,31.57%)

OKLCH (Modern CSS)

oklch(0.33 0.17 278.3)

CSS Variable

--color: #2a178a;

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

13.22

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

1.59

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#2a178a#4a4b8a

ORIG

SIM

Deuteranopia (green)

#2a178a#4d478a

ORIG

SIM

Tritanopia (blue)

#2a178a#291d20

ORIG

SIM

Monochrome (color blind)

#2a178a#352b47

Mixing guide

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

MIXING PALETTE

48%

43%

RYB PIGMENTS

Ultramarine blue

Pigment

48%

Ivory black

Pigment

43%

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)

2.9%

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.

Nightly Expedition

#221188

Galactic Cruise

#111188

Royal

#0C1793

Gentian Blue

#312297

Trendy Green

#778A17

Seance

#63178A

Chathams Blue

#173D8A

Pueblo

#8A2A17

Forest Green

#178A2A

Hawaiian Tan

#8A6417

Fuchsia Blue

#6B4AC5

Stratos

#000053