Blue Color

Blue — The Color of Trust and Reliability

#0000FFBlue

Color Values

HEX#0000FF

RGBrgb(0, 0, 255)

HSLhsl(240°, 100%, 50%)

CSSblue

Shade Palette

#EBF8FF

100

#BEE3F8

300

#63B3ED

500

#4299E1

700

#2B6CB0

900

#1A365D

Complementary Color

↔

#FFFF00

Yellow

Analogous Colors

#0040FF

Azure Blue

#4000FF

Indigo

CSS Usage

CSS

/* By name */
color: blue;
background-color: blue;

/* By HEX */
color: #0000FF;
background-color: #0000FF;

/* By RGB */
color: rgb(0, 0, 255);

/* By HSL */
color: hsl(240deg, 100%, 50%);

/* With opacity */
color: rgba(0, 0, 255, 0.8);
color: hsl(240deg 100% 50% / 80%);

Pure blue (#0000FF) appears very intense on screen. For accessibility, ensure sufficient contrast ratio — use #1D4ED8 or darker variants when placing blue text on white backgrounds to meet WCAG AA standards.

Blue (#0000FF) is one of the most used colors in digital design, symbolizing trust, stability, and professionalism. It has been the default link color since the early web, making it deeply associated with interactivity. Pure blue is extremely saturated, so most modern UIs use mid-toned variants like #2563EB or #3B82F6. Countless global brands including Facebook, Twitter, PayPal, and Samsung have chosen blue as their primary brand color.

Common Use Cases

▸Hyperlinks — default web link color (#0000EE)
▸Primary action buttons — confirm, save, submit actions
▸Informational alerts — info messages, help icons, tooltips
▸Data visualizations — default series color in charts and graphs
▸Background gradients — sky and ocean-themed backgrounds
▸Brand identity — Facebook, PayPal, Ford, IBM, Samsung

Related Colors

Red#FF0000 · RGB(255, 0, 0)→

Green#008000 · RGB(0, 128, 0)→

Navy#000080 · RGB(0, 0, 128)→

← Back to Color Converter

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