#3946cf

Cerulean Blue

Closest match (95% match)

Color formats

RGB

rgb(57, 70, 207)

Red, Green, Blue components

HSL

hsl(235, 61%, 52%)

Hue, Saturation, Lightness

CMYK

cmyk(72, 66, 0, 19)

Print color encoding

Luminance

0.098

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#3946cf

#cfc239

Analogous (Adjacent)

#3991cf

#3946cf

#7739cf

Triadic

#3946cf

#cf3946

#46cf39

Split complementary

#3946cf

#cf7739

#91cf39

Complete conversion table

HEX

#3946CF

RGB

rgb(57,70,207)

RGBA

rgba(57,70,207, 1)

HSL

hsl(234.8,60.98%,51.76%)

OKLCH (Modern CSS)

oklch(0.48 0.21 271.5)

CSS Variable

--color: #3946cf;

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

7.12

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

2.95

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#3946cf#8284cf

ORIG

SIM

Deuteranopia (green)

#3946cf#7066cf

ORIG

SIM

Tritanopia (blue)

#3946cf#3a3940

ORIG

SIM

Monochrome (color blind)

#3946cf#595280

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)

9.8%

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

Denim

#2243B6

Once in a Blue Moon

#0044BB

Vibrant Blue

#0339F8

Old Gold

#CFC239

Purple Heart

#7739CF

Shakespeare

#3991CF

Flush Mahogany

#CF3946

Apple

#46CF39

Raw Sienna

#CF7739

Cornflower Blue

#817BFF

Resolution Blue

#001793