Closest hex to #1c57d3 is #25c

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#25c

1c57d3

1c57d3

contains 25

025 125 225 250 251 252 253 254 255 256 257 258 259 25a 25b 25c 25d 25e 25f 325 425 525 625 725 825 925 a25 b25 c25 d25 e25 f25

contains 5c

05c 15c 25c 35c 45c 55c 5c0 5c1 5c2 5c3 5c4 5c5 5c6 5c7 5c8 5c9 5ca 5cb 5cc 5cd 5ce 5cf 65c 75c 85c 95c a5c b5c c5c d5c e5c f5c

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