Test Purposes Only Table of Interpolated Values (pH 7.4 through 8.8) Below is the complete list of pH and approximate RGB values at 0.1 increments (where relevant): | pH | Approx. RGB | |------|----------------| | **7.4** | (255, 204, 51) | | **7.5** | (238, 183, 61) | | **7.6** | (221, 162, 71) | | **7.7** | (204, 140, 81) | | **7.8** | (187, 119, 91) | | **7.9** | (170, 95, 71) | | **8.0** | (153, 71, 51) | | **8.1** | (136, 70, 85) | | **8.2** | (119, 68, 119) | | **8.3** | (111, 60, 136) | | **8.4** | (102, 51, 153) | | **8.5** | (94, 51, 149) | | **8.6** | (85, 51, 145) | | **8.7** | (77, 51, 140) | | **8.8** | (68, 51, 136) |