Closest hex to #2857b4 is #25b

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#25b

2857b4

2857b4

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 5b

05b 15b 25b 35b 45b 55b 5b0 5b1 5b2 5b3 5b4 5b5 5b6 5b7 5b8 5b9 5ba 5bb 5bc 5bd 5be 5bf 65b 75b 85b 95b a5b b5b c5b d5b e5b f5b

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