The main colour of the GKA brand, which is used in the logo, is Pantone 295c.

C 100, M 70, Y 8, K 54

R 0, G 47, B 95

HTML 002F5F

The GKA brand also has a secondary colour,
Pantone 2708c.

C 30, M 14, Y 0, K 0

R 178, G 200, B 230

HTML B3C8E6