Poor contrast with elevation(box-shadow) with dark theme

[Saisurya Kattamuri]

We're using "Pink and blue grey" dark theme for one of our sites and found that contrast is poor for elevations and box-shadows compared to light theme.

For mat-elevation same shade is used in light and dark themes

pink-and-bluegrey
.mat-elevation-z8 {
box-shadow: 0 5px 5px -3px rgba(0,0,0,.2),0 8px 10px 1px rgba(0,0,0,.14),0 3px 14px 2px rgba(0,0,0,.12)
}

deep-purple-amber
.mat-elevation-z8 {
box-shadow: 0 5px 5px -3px rgba(0,0,0,.2),0 8px 10px 1px rgba(0,0,0,.14),0 3px 14px 2px rgba(0,0,0,.12);
}

Shouldn't it be more darker shadow for dark themes to create the shadow elevation...

Here's the diff with rgba(0,0,0,.75)

with default rgba(0,0,0,.14)

Please advise if this is on par with material guidelines....

Thanks

[Saisurya Kattamuri]

Images are rendered in the original post

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Current implementation

with increased darkness