#313b83

Astronaut

Closest match (97% match)

Color formats

RGB

rgb(49, 59, 131)

Red, Green, Blue components

HSL

hsl(233, 46%, 35%)

Hue, Saturation, Lightness

CMYK

cmyk(63, 55, 0, 49)

Print color encoding

Luminance

0.054

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#313b83

#837931

Analogous (Adjacent)

#316483

#313b83

#503183

Triadic

#313b83

#83313b

#3b8331

Split complementary

#313b83

#835031

#648331

Complete conversion table

HEX

#313B83

RGB

rgb(49,59,131)

RGBA

rgba(49,59,131, 1)

HSL

hsl(232.68,45.56%,35.29%)

OKLCH (Modern CSS)

oklch(0.39 0.12 273.4)

CSS Variable

--color: #313b83;

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

10.08

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

2.08

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#313b83#5b5b83

ORIG

SIM

Deuteranopia (green)

#313b83#4f4a83

ORIG

SIM

Tritanopia (blue)

#313b83#323136

ORIG

SIM

Monochrome (color blind)

#313b83#424242

Mixing guide

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

MIXING PALETTE

51%

48%

RYB PIGMENTS

Ultramarine blue

Pigment

51%

Ivory black

Pigment

48%

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)

5.4%

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.

Good Karma

#333C76

Intergalactic Highway

#273287

Twilight Express

#1C3378

Liquid Denim

#2D3796

Pesto

#837931

Minsk

#503183

Calypso

#316483

Solid Pink

#83313B

Sea Green

#3B8331

Potters Clay

#835031

Blue Marguerite

#6C6EBD

Stratos

#000F4D