How is temperature decided?

We look at the hue: reds, oranges and yellows are warm, greens and blues are cool.

Where is the dividing line?

Hues from 90° to 300° are cool; the rest are warm.

Classify a color as warm or cool and see why based on its hue.

Color

Classification

Warm

Hue 38° falls in the red–yellow range, so this reads as a warm color.

Warm colors lean toward reds and yellows, cool colors toward greens and blues. Pick a color to see its temperature.

How is temperature decided?: We look at the hue: reds, oranges and yellows are warm, greens and blues are cool.
Where is the dividing line?: Hues from 90° to 300° are cool; the rest are warm.