b5f7529a_apbooking___Creating_Keepsakes__Blending_Mode
[Effect] Selects the lower color channel values (e.g., RGB values) from both the base and the blend image, and displays those low values. While the results are similar to the Darken mode, this mode will never create a new color. [Blending Mode] 
Darker Color
Blending Modes Cheat Sheet | The Best of Digital Scrapbooking | Creating Keepsakes
Blending Mode