Team ID Nameplate color Scoreboard color
0       (255, 127, 127) (255, 0, 0, 127)
1       (255, 139, 127) (255, 23, 0, 127)
2       (255, 151, 127) (255, 47, 0, 127)
3       (255, 163, 127) (255, 71, 0, 127)
4       (255, 175, 127) (255, 95, 0, 127)
5       (255, 187, 127) (255, 119, 0, 127)
6       (255, 199, 127) (255, 143, 0, 127)
7       (255, 211, 127) (255, 167, 0, 127)
8       (255, 223, 127) (255, 191, 0, 127)
9       (255, 235, 127) (255, 215, 0, 127)
10      (255, 247, 127) (255, 239, 0, 127)
11      (251, 255, 127) (247, 255, 0, 127)
12      (239, 255, 127) (223, 255, 0, 127)
13      (227, 255, 127) (199, 255, 0, 127)
14      (215, 255, 127) (175, 255, 0, 127)
15      (203, 255, 127) (151, 255, 0, 127)
16      (191, 255, 127) (127, 255, 0, 127)
17      (179, 255, 127) (103, 255, 0, 127)
18      (167, 255, 127) (79, 255, 0, 127)
19      (155, 255, 127) (55, 255, 0, 127)
20      (143, 255, 127) (31, 255, 0, 127)
21      (131, 255, 127) (7, 255, 0, 127)
22      (127, 255, 135) (0, 255, 15, 127)
23      (127, 255, 147) (0, 255, 39, 127)
24      (127, 255, 159) (0, 255, 63, 127)
25      (127, 255, 171) (0, 255, 87, 127)
26      (127, 255, 183) (0, 255, 111, 127)
27      (127, 255, 195) (0, 255, 135, 127)
28      (127, 255, 207) (0, 255, 159, 127)
29      (127, 255, 219) (0, 255, 183, 127)
30      (127, 255, 231) (0, 255, 207, 127)
31      (127, 255, 243) (0, 255, 231, 127)
32      (127, 255, 255) (0, 255, 255, 127)
33      (127, 243, 255) (0, 231, 255, 127)
34      (127, 231, 255) (0, 207, 255, 127)
35      (127, 219, 255) (0, 183, 255, 127)
36      (127, 207, 255) (0, 159, 255, 127)
37      (127, 195, 255) (0, 135, 255, 127)
38      (127, 183, 255) (0, 111, 255, 127)
39      (127, 171, 255) (0, 87, 255, 127)
40      (127, 159, 255) (0, 63, 255, 127)
41      (127, 147, 255) (0, 39, 255, 127)
42      (127, 135, 255) (0, 15, 255, 127)
43      (131, 127, 255) (7, 0, 255, 127)
44      (143, 127, 255) (31, 0, 255, 127)
45      (155, 127, 255) (55, 0, 255, 127)
46      (167, 127, 255) (79, 0, 255, 127)
47      (179, 127, 255) (103, 0, 255, 127)
48      (191, 127, 255) (127, 0, 255, 127)
49      (203, 127, 255) (151, 0, 255, 127)
50      (215, 127, 255) (175, 0, 255, 127)
51      (227, 127, 255) (199, 0, 255, 127)
52      (239, 127, 255) (223, 0, 255, 127)
53      (251, 127, 255) (247, 0, 255, 127)
54      (255, 127, 247) (255, 0, 239, 127)
55      (255, 127, 235) (255, 0, 215, 127)
56      (255, 127, 223) (255, 0, 191, 127)
57      (255, 127, 211) (255, 0, 167, 127)
58      (255, 127, 199) (255, 0, 143, 127)
59      (255, 127, 187) (255, 0, 119, 127)
60      (255, 127, 175) (255, 0, 95, 127)
61      (255, 127, 163) (255, 0, 71, 127)
62      (255, 127, 151) (255, 0, 47, 127)
63      (255, 127, 139) (255, 0, 23, 127)
            (R, G B)             (R, G, B, A)

I tested it for one team, it is rounded but seems to be correct