Scale75Humbrol
Each Scale75 paint is paired with its closest measured Humbrol color. Finish type is checked separately, so a metallic or wash never passes as an opaque swap without a warning.
Similarity is color, not paint behavior
Same-finish rows appear first. Orange warnings mark colors that are close but work differently on a model.
90+Close
80sUsable
<70Mix
Scale75HumbrolMatch
Different finish: opaque acrylic vs metallic. Not a drop-in swap.