#3b4ecc

Cerulean Blue

Closest match (96% match)

Color formats

RGB

rgb(59, 78, 204)

Red, Green, Blue components

HSL

hsl(232, 59%, 52%)

Hue, Saturation, Lightness

CMYK

cmyk(71, 62, 0, 20)

Print color encoding

Luminance

0.107

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#3b4ecc

#ccb93b

Analogous (Adjacent)

#3b96cc

#3b4ecc

#713bcc

Triadic

#3b4ecc

#cc3b4e

#4ecc3b

Split complementary

#3b4ecc

#cc713b

#97cc3b

Complete conversion table

HEX

#3B4ECC

RGB

rgb(59,78,204)

RGBA

rgba(59,78,204, 1)

HSL

hsl(232.14,58.7%,51.57%)

OKLCH (Modern CSS)

oklch(0.49 0.19 270.7)

CSS Variable

--color: #3b4ecc;

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

6.67

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

3.15

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#3b4ecc#8587cc

ORIG

SIM

Deuteranopia (green)

#3b4ecc#7067cc

ORIG

SIM

Tritanopia (blue)

#3b4ecc#3c3e45

ORIG

SIM

Monochrome (color blind)

#3b4ecc#5c587c

Mixing guide

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

MIXING PALETTE

92%

RYB PIGMENTS

Ultramarine blue

Pigment

92%

Titanium white

Pigment

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)

10.7%

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.

Flying Fish Blue

#024ACA

Warm Blue

#4B57DB

Frosted Blueberries

#0055DD

Denim

#2243B6

Earls Green

#CCB93B

Purple Heart

#713BCC

Shakespeare

#3B96CC

Flush Mahogany

#CC3B4E

Apple

#4ECC3B

Raw Sienna

#CC713B

Malibu

#8183FF

Resolution Blue

#001F90