注如果要99%的红色透明，则16进制为：#FF0000FC

前6个FF0000为红色 FC为99%

100% - FF 99% - FC 98% - FA 97% - F7 96% - F5 95% - F2 94% - F0 93% - ED 92% - EB 91% - E8 90% - E6 89% - E3 88% - E0 87% - DE 86% - DB 85% - D9 84% - D6 83% - D4 82% - D1 81% - CF 80% - CC 79% - C9 78% - C7 77% - C4 76% - C2 75% - BF 74% - BD 73% - BA 72% - B8 71% - B5 70% - B3 69% - B0 68% - AD 67% - AB 66% - A8 65% - A6 64% - A3 63% - A1 62% - 9E 61% - 9C 60% - 99 59% - 96 58% - 94 57% - 91 56% - 8F 55% - 8C 54% - 8A 53% - 87 52% - 85 51% - 82 50% - 80 49% - 7D 48% - 7A 47% - 78 46% - 75 45% - 73 44% - 70 43% - 6E 42% - 6B 41% - 69 40% - 66 39% - 63 38% - 61 37% - 5E 36% - 5C 35% - 59 34% - 57 33% - 54 32% - 52 31% - 4F 30% - 4D 29% - 4A 28% - 47 27% - 45 26% - 42 25% - 40 24% - 3D 23% - 3B 22% - 38 21% - 36 20% - 33 19% - 30 18% - 2E 17% - 2B 16% - 29 15% - 26 14% - 24 13% - 21 12% - 1F 11% - 1C 10% - 1A 9% - 17 8% - 14 7% - 12 6% - 0F 5% - 0D 4% - 0A 3% - 08 2% - 05 1% - 03 0% - 00