An example of gunmetal gray color, in which you can see slight bruises, is in the upper right corner. It has a film of the same name. They probably used this color in the movie.
#F4F7F7
#E2EAEB
#C8D6D9
#A1BABF
#73969D
#587B82
#4C676E
#42555C
#3B494F
#2C3539
#20292C
#2c3539
#3e5b39
#368a2d
#ebbab9
#f4f2f0
#f6358a
#ffe6e8
#ebe6d9
#9c9f84
#d8d8d8
#b58d3d
#fcd29f
#9f4a54
#fcab64
#7cb4b8
#191970
#556b2f
#e5e4e2
#41494c
#565d60
#6b7174
#808588
#959a9c
#aaaeaf
#bfc2c3
#d4d6d7
#e9eaeb
#ffffff
#392c35
#35392c
#0b0d0e
#161a1c
#21282b
#374247
#425056
#4d5d64
#2c2f39
#2c3937
#39302c
Related: Gray Gradients