#063fbb

Cobalt

Closest match (96% match)

Color formats

RGB

rgb(6, 63, 187)

Red, Green, Blue components

HSL

hsl(221, 94%, 38%)

Hue, Saturation, Lightness

CMYK

cmyk(97, 66, 0, 27)

Print color encoding

Luminance

0.072

Relative luminance

Variations

Shades (Darkening)

Tints (Lightening)

Tones (Reduced saturation)

Harmonies

Click the color slices to copy the code.

Complementary (Opposite)

#063fbb

#bb8206

Analogous (Adjacent)

#0699bb

#063fbb

#2806bb

Triadic

#063fbb

#bb063f

#3fbb06

Split complementary

#063fbb

#bb2806

#99bb06

Complete conversion table

HEX

#063FBB

RGB

rgb(6,63,187)

RGBA

rgba(6,63,187, 1)

HSL

hsl(221.1,93.78%,37.84%)

OKLCH (Modern CSS)

oklch(0.43 0.20 262.8)

CSS Variable

--color: #063fbb;

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

8.62

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

On black background

2.44

Small text (14pt)

The quick brown fox jumps over...

AAA

Large text or UI (18pt Bold)

AAA

Color blindness simulator

ORIG

SIM

Protanopia (red)

#063fbb#7677bb

ORIG

SIM

Deuteranopia (green)

#063fbb#493cbb

ORIG

SIM

Tritanopia (blue)

#063fbb#092024

ORIG

SIM

Monochrome (color blind)

#063fbb#4b486c

Mixing guide

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

MIXING PALETTE

69%

26%

RYB PIGMENTS

Ultramarine blue

Pigment

69%

Ivory black

Pigment

26%

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)

7.2%

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.

Denim

#2243B6

Once in a Blue Moon

#0044BB

Blue Screen of Death

#0033BB

Blue Hour

#0034AB

Hot Toddy

#BB8206

Dark Blue

#2806BB

Bondi Blue

#0699BB

Shiraz

#BB063F

Limeade

#3FBB06

Milano Red

#BB2806

Cornflower Blue

#6772F9

Resolution Blue

#001380