Closest hex to #20c4b6 is #2cb

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#2cb

20c4b6

20c4b6

contains 2c

02c 12c 22c 2c0 2c1 2c2 2c3 2c4 2c5 2c6 2c7 2c8 2c9 2ca 2cb 2cc 2cd 2ce 2cf 32c 42c 52c 62c 72c 82c 92c a2c b2c c2c d2c e2c f2c

contains cb

0cb 1cb 2cb 3cb 4cb 5cb 6cb 7cb 8cb 9cb acb bcb cb0 cb1 cb2 cb3 cb4 cb5 cb6 cb7 cb8 cb9 cba cbb cbc cbd cbe cbf ccb dcb ecb fcb

contains 2b

02b 12b 22b 2b0 2b1 2b2 2b3 2b4 2b5 2b6 2b7 2b8 2b9 2ba 2bb 2bc 2bd 2be 2bf 32b 42b 52b 62b 72b 82b 92b a2b b2b c2b d2b e2b f2b