Definition of sky colour in US English:

sky colour

(US sky color)

noun

  • A shade of blue comparable to that of a clear daytime sky; a light blue.

adjective

  • Of the colour of a clear daytime sky; = sky-coloured.

Origin

Mid 16th century; earliest use found in Thomas Cooper (c1517–1594), theologian and bishop of Winchester. From sky + colour.

Pronunciation

sky colour

/ˈskʌɪ ˌkʌlə/