Yellowish tint over footage in Editor

Actually the first post had the Settings tab ... the color management settings ... that I needed to see. 

Ok ... that's a mess ...

First, set Display Color Managemet to on, and as you're on a Mac, Extended Dynamic range also.

Next, auto detect log to on. And make sure that auto-tonemap is on down farther in the Sequence settings (as it is in your grab).

Now ... to display gamma settings. You're on a Mac, so you essentially have three poison choices. Seriously. As Macs without reference modes use in incorrect display transform for Rec.709 media.

So .... the choices (and problems) are:

QuickTime/gamma 1.96

This matches the display transform in Premiere to the same odd one used by most Mac Retina monitors. So what you see in QuickTime Player and Chrome/Safari browsers is alike to within Premiere. Though VLC will show the image lighter.

(As you are working in a 'brighter' shadow display than normal Rec.709, you'll make the image lighter ... and when shown on nearly all non-Macs, it's too dark and over-saturated. Which is much of The World of course.)

Web/gamma 2.2

This is chosen by some as supposedly the Web is gamma 2.2, though a ton of monitors just are set for Rec.709/2.4 anyway.  This way the image you create will look a bit lighter, on most Macs than in Premiere on yours, and within "normal" range on most other screens. Chosen by a number of people, including some colorists I know, as a "compromise".

Broadcast/gamma 2.4

This is the 'standard' for the creation of Rec.709 video, and is used by nearly all colorists for all their Rec.709 outputs. It will look ... on any screen, relative to other pro produced media on that screen ... like other pro produced media. As all pro media is produced at 2.4. 

(And of course, will be lighter and slightly desaturated on Macs without reference modes. But ... this is the same as all other pro produced media.)

Your choice.

Exports

Make sure that all export presets match the color space/dynamic range of the sequence.

Rec.709 sequences must not be used with export presets with either HLG or PQ in the preset name. 

HLG and PQ sequences must be used with matching HLG or PQ presets.