Yellow spans hue 45°–75° and contains 1,398,144 RGB colors, centred on #FFFF00. Gold, lemon, mustard, khaki and cream belong here. The eye reads yellow as a narrow band, but the arc is exactly 30° wide — the same as every other family.
Every registered tint, tone and shade of yellow, ordered by luminance.
These are everyday names, not ORCN categories. Each one links to a
list built from the color name, so its colors may sit in more than one Color Family.
Why the register keeps them apart.