Yes. The kind of racism we have now began in my period of study. In the late medieval period, there was a mild prejudice against skin colour akin to that against customs & dress & food. The main source of prejudice was religion. https://twitter.com/LynneAvVer/status/998146920475340800 …
And white people darken theirs. There seems to be a light golden brown which is felt to be optimal. Although, lighter skin is often associated with wealth and not having to work in the sun in historical contexts.