The trouble with cutting formulas, is that you don’t know what you’re going to get until you’ve bought and paid for it. (Unless you’ve seen it done somewhere and liked it?)

All the key attributes may alter, not just the one you are trying to change.

Do you want a colour from a similar Hue Family location, the same quantity of Chroma (colourfulness), only lighter (higher Value)?

Or do you want the new colour to be similar in,

Hue Family location + lighter + more neutral?

Here are some existing colours from the same Hue Family neighbourhood.

They are all lighter than Accessible Beige - with similar quantities of colourfulness (Chroma). Except White Heron & Futon are also more neutral - (less Chroma)

If the colours are still too ‘yellow’ for you then you are looking for colours with lower Chroma again.

You may find this article of interest,,

https://thelandofcolor.com/cutting-paint-color-formulas-people-decide-it-works-before-its-done/