#3904bf

Dark Blue

Closest match (97% match)

Color formats

RGB

rgb(57, 4, 191)

Red, Green, Blue components

HSL

hsl(257, 96%, 38%)

Hue, Saturation, Lightness

CMYK

cmyk(70, 98, 0, 25)

Print color encoding

Luminance

0.047

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#3904bf

#8abf04

Analogous (Adjacent)

#042cbf

#3904bf

#9704bf

Triadic

#3904bf

#bf3904

#04bf39

Split complementary

#3904bf

#bf9704

#2dbf04

Complete conversion table

HEX

#3904BF

RGB

rgb(57,4,191)

RGBA

rgba(57,4,191, 1)

HSL

hsl(257.01,95.9%,38.24%)

OKLCH (Modern CSS)

oklch(0.39 0.24 278.1)

CSS Variable

--color: #3904bf;

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

10.80

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

1.94

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#3904bf#5658bf

ORIG

SIM

Deuteranopia (green)

#3904bf#6a61bf

ORIG

SIM

Tritanopia (blue)

#3904bf#361a1d

ORIG

SIM

Monochrome (color blind)

#3904bf#492d7a

Mixing guide

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

MIXING PALETTE

59%

22%

19%

RYB PIGMENTS

Ultramarine blue

Pigment

59%

Ivory black

Pigment

22%

Cadmium red

Pigment

19%

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)

4.7%

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.

Galactic Highway

#3311BB

Busty Blue

#3300CC

True Blue

#010FCC

Too Dark Tonight

#0011BB

Pistachio

#8ABF04

Purple

#9704BF

International Klein Blue

#042CBF

Fire

#BF3904

Malachite

#04BF39

Buddha Gold

#BF9604

Electric Violet

#8247FE

Navy Blue

#000084