Closest hex to #55dd00 is #5d0

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#
#5d0

55dd00

55dd00

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 d0

0d0 1d0 2d0 3d0 4d0 5d0 6d0 7d0 8d0 9d0 ad0 bd0 cd0 d00 d01 d02 d03 d04 d05 d06 d07 d08 d09 d0a d0b d0c d0d d0e d0f dd0 ed0 fd0

contains 50

050 150 250 350 450 500 501 502 503 504 505 506 507 508 509 50a 50b 50c 50d 50e 50f 550 650 750 850 950 a50 b50 c50 d50 e50 f50