r vs RGB, What's the Difference?

Which to use

“r” is a character and “RGB” is a noun - they look or sound alike but fill different roles in a sentence.

#637
“r” frequency rank: #49,331
“RGB” frequency rank: 49968
confusion score

Side-by-Side Comparison

Feature	r	RGB
Definition	Dix-huitième lettre et quatorzième consonne de l’alphabet (minuscule).	RVB.

Where the spellings diverge

Shared letters are muted; the letters that actually set r and RGB apart are highlighted. They share 1 letter in sequence, which is exactly why the eye skips the difference.

1 ch

3 ch

RGB

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: r is \ɛʁ\ while RGB is \ɛʁ.ʒe.be\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “r” sits inside “RGB”, and the parts of speech differ too (character vs noun), which is usually the fastest check. Our composite confusion score for this pair is 49968, derived from the frequency rank of both members and their visual similarity.

r is recorded at frequency rank #637, classified as acharacter, pronounced \ɛʁ\. RGB is at rank #49,331, tagged as anoun, pronounced \ɛʁ.ʒe.be\.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 49968, this pair ranks #166,402 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of r vs RGB

Shared letters: r. Private to "r": -. Private to "RGB": bg.

"r" · 1 letters · shape C · "RGB" · 3 letters · shape CCC

Frequency comparison

r#637

RGB#49,331

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "r" and "RGB" be used interchangeably?

No - they are not even the same part of speech. "r" is a character and "RGB" a noun, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "r" or "RGB"?

"r" is the more common of the two: it sits at frequency rank #637 in our French list, against #49,331 for "RGB". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Remembering r vs RGB

The fastest way to pick the right one every time.

Check the role first: if you need a character, it's “r”; for a noun, it's “RGB”.
See each word in full, definition, IPA, etymology and its other confusables. Full “r” entry
Browse more pairs most likely to be confused. Most confusable