which pool ball is red

In standard modern pool (American-style 8-ball and 9-ball), the solid 3 ball is red, and the striped 11 ball is red with a white background.

Quick Scoop: Which pool ball is red?

In most regular bar or league games using the common 1–15 ball set:

• 3 ball = solid red.

• 11 ball = red stripe on a mostly white ball.

These colors are standardized so players can quickly recognize balls during play under different lighting and on TV.

Other pool sets with red balls

Not every cue-sport set uses the same scheme:

• In UK-style red/yellow pool, there are many identical red balls and many identical yellow balls instead of the full 1–15 color spread.

• In snooker (a different cue sport), there are 15 plain red balls plus six differently colored “colors.”

So if someone says “the red ball” without context, it might mean:

• The 3 (or 11) in standard American pool.

• One of the many red object balls in UK red/yellow pool or snooker.

Why those colors?

Designers chose the palette partly for contrast and quick recognition:

• Standard sets pair each solid with a matching stripe (1–7 with 9–15), so 3 and 11 share the red color.

• Red is one of the primary “anchor” colors in the classic pool palette, alongside yellow and blue, which makes the 3 ball especially easy to spot.

TL;DR: In the common 1–15 pool set, the red balls are the solid 3 and the striped 11.

Information gathered from public forums or data available on the internet and portrayed here.