Switch the Chiefs swatches to grayscale and the pair still separates. The gold becomes a noticeably lighter gray than the red. That lightness gap is what keeps a gold stripe visible on a red panel even when the warm hues themselves are hard to distinguish.

Digital swatches and legacy print references
ColorScreen HEXRGBPantone referenceCMYK reference
Red#E31837227, 24, 55PMS 186 C(0, 92, 77, 22)
Gold#FFB81C255, 184, 28PMS 1235 C(0, 31, 98, 0)
Kansas City Chiefs Colors

All NFL team colors

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