Why are these numerical color values not working even though BrickColor name values are?

So I'm using a script that changes a color value with the brick it touches, and it works when using the BrickColor.new("Really black")(or any color, as long as it's BrickColor.new(Color) format, but I can't seem to get numerical values to work with numerical values for BrickColor.new or Color3.new,

Color 3 Version:

if hitpart.Color3 ~= Color3.new(90, 76, 66) and hitpart.Color3 ~= Color3.new(45, 43, 41)
then 
    hitpart.Color3 = Color3.new(128, 187, 219)

BrickColor Version:

 if hitpart.BrickColor ~= BrickColor.new(90, 76, 66) and hitpart.BrickColor ~= BrickColor.new(45, 43, 41)
then 
    hitpart.BrickColor = BrickColor.new(128, 187, 219)