No question, dark hardwood tends to show the scratches more. Whether you have laminate or wood, darker shades of flooring have more contrast to lighter-toned scratches or scuffs.
A typical scratch on floors means you dig or etch into the wood. As a result, the scratch uncovers the lighter raw wood membrane of the floor. This lighter-toned layer uncovered by the scratch or gouge blends with light or natural flooring much better than darker wood floors.