#33178e

Persian Indigo

Closest match (97% match)

Color formats

RGB

rgb(51, 23, 142)

Red, Green, Blue components

HSL

hsl(254, 72%, 32%)

Hue, Saturation, Lightness

CMYK

cmyk(64, 84, 0, 44)

Print color encoding

Luminance

0.033

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#33178e

#728e17

Analogous (Adjacent)

#17368e

#33178e

#6f178e

Triadic

#33178e

#8e3317

#178e33

Split complementary

#33178e

#8e6f17

#368e17

Complete conversion table

HEX

#33178E

RGB

rgb(51,23,142)

RGBA

rgba(51,23,142, 1)

HSL

hsl(254.12,72.12%,32.35%)

OKLCH (Modern CSS)

oklch(0.34 0.18 282.4)

CSS Variable

--color: #33178e;

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

12.70

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

1.65

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#33178e#4b4d8e

ORIG

SIM

Deuteranopia (green)

#33178e#544e8e

ORIG

SIM

Tritanopia (blue)

#33178e#322124

ORIG

SIM

Monochrome (color blind)

#33178e#392d4b

Mixing guide

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

MIXING PALETTE

47%

40%

13%

RYB PIGMENTS

Ultramarine blue

Pigment

47%

Ivory black

Pigment

40%

Cadmium red

Pigment

13%

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)

3.3%

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

Gentian Blue

#312297

Royal

#0C1793

Dramatic Blue

#240093

Trendy Green

#728E17

Seance

#6F178E

Torea Bay

#17368E

Copper Canyon

#8E3317

Forest Green

#178E33

Hacienda

#8E6F17

Fuchsia Blue

#734CC9

Stratos

#000057