0to255

• +12 #fff 100%
• +11 #f6f6f6 96%
• +10 #eee 93%
• +9 #e5e5e5 90%
• +8 #ddd 87%
• +7 #d4d4d4 83%
• +6 #ccc 80%
• +5 #c3c3c3 76%
• +4 #bbb 73%
• +3 #b2b2b2 70%
• +2 #aaa 67%
• +1 #a1a1a1 63%
• 0 #999 60%
• -1 #919191 57%
• -2 #888 53%
• -3 #808080 50%
• -4 #777 47%
• -5 #6f6f6f 44%
• -6 #666 40%
• -7 #5e5e5e 37%
• -8 #555 33%
• -9 #4d4d4d 30%
• -10 #444 27%
• -11 #3c3c3c 24%
• -12 #333 20%
• -13 #2b2b2b 17%
• -14 #222 13%
• -15 #1a1a1a 10%
• -16 #111 7%
• -17 #090909 4%
• -18 #000 0%

Created by Shaun Chapman