#3300a9

Pigment Indigo

Closest match (93% match)

Color formats

RGB

rgb(51, 0, 169)

Red, Green, Blue components

HSL

hsl(258, 100%, 33%)

Hue, Saturation, Lightness

CMYK

cmyk(70, 100, 0, 34)

Print color encoding

Luminance

0.036

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#3300a9

#76a900

Analogous (Adjacent)

#0021a9

#3300a9

#8800a9

Triadic

#3300a9

#a93300

#00a933

Split complementary

#3300a9

#a98800

#21a900

Complete conversion table

HEX

#3300A9

RGB

rgb(51,0,169)

RGBA

rgba(51,0,169, 1)

HSL

hsl(258.11,100%,33.14%)

OKLCH (Modern CSS)

oklch(0.36 0.22 278.9)

CSS Variable

--color: #3300a9;

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

12.25

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

1.71

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#3300a9#4a4ca9

ORIG

SIM

Deuteranopia (green)

#3300a9#5e56a9

ORIG

SIM

Tritanopia (blue)

#3300a9#301618

ORIG

SIM

Monochrome (color blind)

#3300a9#402866

Mixing guide

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

MIXING PALETTE

51%

31%

18%

RYB PIGMENTS

Ultramarine blue

Pigment

51%

Ivory black

Pigment

31%

Cadmium red

Pigment

18%

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)

3.6%

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.

Bohemian Blue

#0000AA

Cobalt

#030AA7

Space Battle Blue

#440099

Galactic Highway

#3311BB

Limeade

#76A900

Purple

#8800A9

International Klein Blue

#0021A9

Fire

#A93300

Green Haze

#00A933

Pirate Gold

#A98800

Royal Blue

#7942E6

Navy Blue

#00006F