If 16-color support is compiled, the following apply. Assume that xterm’s resources are set so that the ISO color codes are the first 8 of a set of 16. Then the aixterm colors are the bright versions of the ISO colors:
P s = 9 0 → Set foreground color to Black. P s = 9 1 → Set foreground color to Red. P s = 9 2 → Set foreground color to Green. P s = 9 3 → Set foreground color to Yellow. P s = 9 4 → Set foreground color to Blue. P s = 9 5 → Set foreground color to Magenta. P s = 9 6 → Set foreground color to Cyan. P s = 9 7 → Set foreground color to White. P s = 1 0 0 → Set background color to Black. P s = 1 0 1 → Set background color to Red. P s = 1 0 2 → Set background color to Green. P s = 1 0 3 → Set background color to Yellow. P s = 1 0 4 → Set background color to Blue. P s = 1 0 5 → Set background color to Magenta. P s = 1 0 6 → Set background color to Cyan. P s = 1 0 7 → Set background color to White.