Variant: rs7873389 

    present in Gene: PTCSC2
    present in Chromosome: 9
    Position on Chromosome: 97846948
    Alleles of this Variant: C/T

rs7873389 in PTCSC2 gene and Hair Color PMID 30531825 2018 Genome-wide study of hair colour in UK Biobank explains most of the SNP heritability.