#2b4171

Astronaut

Closest match (97% match)

Color formats

RGB

rgb(43, 65, 113)

Red, Green, Blue components

HSL

hsl(221, 45%, 31%)

Hue, Saturation, Lightness

CMYK

cmyk(62, 42, 0, 56)

Print color encoding

Luminance

0.055

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#2b4171

#715b2b

Analogous (Adjacent)

#2b6471

#2b4171

#382b71

Triadic

#2b4171

#712b41

#41712b

Split complementary

#2b4171

#71382b

#64712b

Complete conversion table

HEX

#2B4171

RGB

rgb(43,65,113)

RGBA

rgba(43,65,113, 1)

HSL

hsl(221.14,44.87%,30.59%)

OKLCH (Modern CSS)

oklch(0.38 0.09 264.1)

CSS Variable

--color: #2b4171;

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

10.01

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

2.10

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#2b4171#565771

ORIG

SIM

Deuteranopia (green)

#2b4171#444071

ORIG

SIM

Tritanopia (blue)

#2b4171#2c3137

ORIG

SIM

Monochrome (color blind)

#2b4171#424242

Mixing guide

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

MIXING PALETTE

59%

38%

RYB PIGMENTS

Ivory black

Pigment

59%

Ultramarine blue

Pigment

38%

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)

5.5%

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.

Napoleonic Blue

#2C4170

Space Missions

#324471

Nightlife

#27426B

Dragonfly

#314A76

Dallas

#715B2B

Jacarta

#382B71

Casal

#2B6471

Tawny Port

#712B41

Woodland

#41712B

Old Copper

#71382B

Waikawa Gray

#6374A9

Midnight

#00143D