The Ethereum logo contains for colours: Grey, Golden Brown, Light Grey and white. The colours were sourced from the Ethereum Visual Identity.

Ethereum Logo

#ecf0f1
Ethereum Light Grey
Hex: #ecf0f1
RGB: 236, 240, 241

#3c3c3d
Ethereum Gray
Hex: #3c3c3d
RGB: 60, 60, 61

#c99d66
Ethereum Gold
Hex: #c99d66
RGB: 201, 157, 102

#ffffff
White
Hex: #ffffff
RGB: 255, 255, 255