#3394bb

Boston Blue

Closest match (99% match)

Color formats

RGB

rgb(51, 148, 187)

Red, Green, Blue components

HSL

hsl(197, 57%, 47%)

Hue, Saturation, Lightness

CMYK

cmyk(73, 21, 0, 27)

Print color encoding

Luminance

0.255

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#3394bb

#bb5a33

Analogous (Adjacent)

#33bb9e

#3394bb

#3350bb

Triadic

#3394bb

#bb3394

#94bb33

Split complementary

#3394bb

#bb3350

#bb9e33

Complete conversion table

HEX

#3394BB

RGB

rgb(51,148,187)

RGBA

rgba(51,148,187, 1)

HSL

hsl(197.21,57.14%,46.67%)

OKLCH (Modern CSS)

oklch(0.63 0.11 229.0)

CSS Variable

--color: #3394bb;

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

3.45

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

6.09

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#3394bb#a5a6bb

ORIG

SIM

Deuteranopia (green)

#3394bb#655cbb

ORIG

SIM

Tritanopia (blue)

#3394bb#385b66

ORIG

SIM

Monochrome (color blind)

#3394bb#8a8a8a

Mixing guide

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

MIXING PALETTE

73%

16%

11%

RYB PIGMENTS

Ultramarine blue

Pigment

73%

Cadmium yellow

Pigment

16%

Ivory black

Pigment

11%

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

Cyan hue

485–500 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)

25.5%

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.

Swimmer

#0A91BF

Ocean Blue

#009DC4

Mediterranean Sea

#1E8CAB

Underwater Moonlight

#4488AA

Tuscany

#BB5A33

Governor Bay

#3350BB

Shamrock

#33BB9E

Medium Red Violet

#BB3394

Atlantis

#94BB33

Brick Red

#BB3350

Malibu

#78CFF8

Orient

#005D81