Closest hex to #51d555 is #5d5

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#5d5

51d555

51d555

contains 5d

05d 15d 25d 35d 45d 55d 5d0 5d1 5d2 5d3 5d4 5d5 5d6 5d7 5d8 5d9 5da 5db 5dc 5dd 5de 5df 65d 75d 85d 95d a5d b5d c5d d5d e5d f5d

contains d5

0d5 1d5 2d5 3d5 4d5 5d5 6d5 7d5 8d5 9d5 ad5 bd5 cd5 d50 d51 d52 d53 d54 d55 d56 d57 d58 d59 d5a d5b d5c d5d d5e d5f dd5 ed5 fd5

contains 55

055 155 255 355 455 550 551 552 553 554 555 556 557 558 559 55a 55b 55c 55d 55e 55f 655 755 855 955 a55 b55 c55 d55 e55 f55