#280b83

Blue Gem

Closest match (99% match)

Color formats

RGB

rgb(40, 11, 131)

Red, Green, Blue components

HSL

hsl(255, 85%, 28%)

Hue, Saturation, Lightness

CMYK

cmyk(69, 92, 0, 49)

Print color encoding

Luminance

0.023

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#280b83

#66830b

Analogous (Adjacent)

#0b2a83

#280b83

#640b83

Triadic

#280b83

#83280b

#0b8328

Split complementary

#280b83

#83640b

#2a830b

Complete conversion table

HEX

#280B83

RGB

rgb(40,11,131)

RGBA

rgba(40,11,131, 1)

HSL

hsl(254.5,84.51%,27.84%)

OKLCH (Modern CSS)

oklch(0.31 0.17 279.6)

CSS Variable

--color: #280b83;

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

14.33

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

1.47

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#280b83#404183

ORIG

SIM

Deuteranopia (green)

#280b83#494383

ORIG

SIM

Tritanopia (blue)

#280b83#271619

ORIG

SIM

Monochrome (color blind)

#280b83#302542

Mixing guide

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

MIXING PALETTE

46%

43%

12%

RYB PIGMENTS

Ivory black

Pigment

46%

Ultramarine blue

Pigment

43%

Cadmium red

Pigment

12%

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)

2.3%

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.

Nightly Expedition

#221188

Orbital Kingdom

#220088

Galactic Cruise

#111188

Child of the Night

#220077

Olivetone

#66830B

Windsor

#640B83

Catalina Blue

#0B2A83

Kenyan Copper

#83280B

Salem

#0B8328

Corn Harvest

#83640B

Studio

#6941BE

Stratos

#00004D