blue (adj.)

the colour of the sky

Examples

• The sea is blue.

Key rules

• Blue describes the colour of the sky or sea
• Use a blue + noun: a blue car
• Feeling blue means feeling sad

Common mistakes

• a blue colour car → a blue car
• the blue is my favourite → Blue is my favourite colour

Use cases

• Describing colours
• Talking about the sky
• Describing mood informally