James 2:1

My fellow believers, do not practice your faith in our glorious Lord Jesus Christ with an attitude of partiality (toward people- show no favoritism, no prejudice, no snobbery.)

Racism can be called the sin of partiality and is not color-dependent.  People can be partial in many ways because they want to grant favor to one group and withhold from another.  It isn’t ok with God in any form, and as Christians, we should practice walking in love for everyone and not be partial in any way.