#2d4bb9

Cerulean Blue

Closest match (98% match)

Color formats

RGB

rgb(45, 75, 185)

Red, Green, Blue components

HSL

hsl(227, 61%, 45%)

Hue, Saturation, Lightness

CMYK

cmyk(76, 59, 0, 27)

Print color encoding

Luminance

0.091

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#2d4bb9

#b99b2d

Analogous (Adjacent)

#2d91b9

#2d4bb9

#552db9

Triadic

#2d4bb9

#b92d4b

#4bb92d

Split complementary

#2d4bb9

#b9552d

#91b92d

Complete conversion table

HEX

#2D4BB9

RGB

rgb(45,75,185)

RGBA

rgba(45,75,185, 1)

HSL

hsl(227.14,60.87%,45.1%)

OKLCH (Modern CSS)

oklch(0.46 0.18 267.3)

CSS Variable

--color: #2d4bb9;

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

7.45

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

2.82

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#2d4bb9#7b7db9

ORIG

SIM

Deuteranopia (green)

#2d4bb9#6057b9

ORIG

SIM

Tritanopia (blue)

#2d4bb9#2f373d

ORIG

SIM

Monochrome (color blind)

#2d4bb9#545369

Mixing guide

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

MIXING PALETTE

80%

15%

RYB PIGMENTS

Ultramarine blue

Pigment

80%

Ivory black

Pigment

15%

Cadmium yellow

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)

9.1%

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.

Denim

#2243B6

Flying Fish Blue

#024ACA

Once in a Blue Moon

#0044BB

Blasphemous Blue

#3356AA

Alpine

#B99B2D

Purple Heart

#552DB9

Boston Blue

#2D91B9

Brick Red

#B92D4B

Apple

#4BB92D

Tuscany

#B9552D

Cornflower Blue

#747FF7

Resolution Blue

#001D7F