#0000cc

Dark Blue

Closest match (99% match)

Color formats

RGB

rgb(0, 0, 204)

Red, Green, Blue components

HSL

hsl(240, 100%, 40%)

Hue, Saturation, Lightness

CMYK

cmyk(100, 100, 0, 20)

Print color encoding

Luminance

0.044

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#0000cc

#cccc00

Analogous (Adjacent)

#0066cc

#0000cc

#6600cc

Triadic

#0000cc

#cc0000

#00cc00

Split complementary

#0000cc

#cc6600

#66cc00

Complete conversion table

HEX

#0000CC

RGB

rgb(0,0,204)

RGBA

rgba(0,0,204, 1)

HSL

hsl(240,100%,40%)

OKLCH (Modern CSS)

oklch(0.38 0.26 264.1)

CSS Variable

--color: #0000cc;

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

11.22

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

1.87

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#0000cc#5a5ccc

ORIG

SIM

Deuteranopia (green)

#0000cc#4b3dcc

ORIG

SIM

Tritanopia (blue)

#0000cc#000000

ORIG

SIM

Monochrome (color blind)

#0000cc#412984

Mixing guide

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

MIXING PALETTE

80%

20%

RYB PIGMENTS

Ultramarine blue

Pigment

80%

Ivory black

Pigment

20%

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)

4.4%

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.

True Blue

#010FCC

Busty Blue

#3300CC

Too Dark Tonight

#0011BB

Galactic Highway

#3311BB

Rio Grande

#CCCC00

Purple

#6600CC

Science Blue

#0066CC

Communist

#CC0000

Tunic Green

#00CC00

Tenn

#CC6600

Electric Violet

#7044FF

Navy Blue

#000090