Closest hex to #1b8dc5 is #28c

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#28c

1b8dc5

1b8dc5

contains 28

028 128 228 280 281 282 283 284 285 286 287 288 289 28a 28b 28c 28d 28e 28f 328 428 528 628 728 828 928 a28 b28 c28 d28 e28 f28

contains 8c

08c 18c 28c 38c 48c 58c 68c 78c 88c 8c0 8c1 8c2 8c3 8c4 8c5 8c6 8c7 8c8 8c9 8ca 8cb 8cc 8cd 8ce 8cf 98c a8c b8c c8c d8c e8c f8c

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