Closest hex to #1d2e4f is #235

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#
#235

1d2e4f

1d2e4f

contains 23

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contains 35

035 135 235 335 350 351 352 353 354 355 356 357 358 359 35a 35b 35c 35d 35e 35f 435 535 635 735 835 935 a35 b35 c35 d35 e35 f35

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