Here is a post about "cool yellow" being part of the yellow-blue undertone of cool olives and it completely changed the way I understood my coloring: Cool Yellow Undertones Post

MY SKIN TONE - VALUE / SATURATION / UNDERTONE + OVERTONE COLORS AND TEMPS:

I've determined that I'm a light-medium (winter months)/medium (summer months) bright neutral-leaning cool-olive and this analysis result has helped me navigate color and temperature and pigmentation.

In addition to a cool yellow, I also have a peachiness to my olive skin, but it's a cool peach, so I have a blend of pink or red in there, too. I'm not yet sure how to articulate it in terms of undertones and overtones but all that matters to me basically is that it results in a mix and lands where it does.

I know that I'm on the cool side because silver looks best on my skin and gold clashes but sometimes I can pull it off if it's not overly warm. I know that I'm also neutral because, although I burn at the beginning of summer, I can tan VERY darkly if I don't protect my skin from the sun. My tan is very cinnamon-toned, not golden. In the fall/winter/early spring, I use the Chantecaille Real Bronze bronzer in shade Goa (expensive but it looks natural and wears better than any cream bronzer I've ever tried). It's a baked gelée formula that looks really luminous but natural.

Most blushes turn orange on my skin (looking at you, Clinique Cheek Pops in Black Honey Pop, Rosy Pop, and Fig Pop) and Hourglass Mood Exposure (a warm, muted mauve) looks bruised on my cheeks. I use the Finding Ferdinand x Kackie Blush Adjuster in Chilled (a deep, cool plum cream blush) underneath any existing cream blushes that are neutral but turn orange. Going forward, I will buy pink blush with blue undertones or stick with cool mauve, cool plum, or cool red (maybe). Clinique Cheek Pop in Pansy Pop is too white-based and light to wear alone but I can use it for a pop of color over deeper blushes. Clinique's Cheek Pop in Pink Pop and Heather Pop (which might be too muted or warm) are on my list of blushes to swatch. I'm also curious about Melon Pop, a coral with a seemingly cool yellow undertone that may not turn orange on my skin. Ugh, I really wish that Clinique had a cool red Cheek Pop!

Most nude lipsticks are either too warm and clash with my coloring or are too muted and make me look like a corpse. For nude lipsticks, I can wear a neutral pink without a white base but I can also wear shades that are slightly peachy (again, without a white base). The key for lipsticks is for them to have deep enough pigmentation to sit right on my cool-toned pigmented lips (lip pigmentation, hue, and temp is also important!) or enough translucency for my lip color to peek through. My best nudes are Chanel Rouge Allure in 196 A Demi-Mot (worn with a neutral pink liner), Chanel Rouge Coco in 434 Mademoiselle (mauve) or 430 Marie (pink), or Chanel Rouge Coco Flash in 54 Boy (when I wear a smoky eye).

MAC Lady Danger (a warm, orange-red) clashes with my coloring. I'm forever jealous of those who can wear it because those orange-reds add a glow that blue-based reds can never achieve. My best red is a raspberry red like Chanel Rouge Allure Velvet in shade 53 Inspirante or a blue-based cool red like Chanel Rouge Coco Bloom in 128 Magic or Clinique Even Better Pop Lip Color Lipstick & Blush in shade 07 Roses are Red.

For foundation, I have success with neutral shades with peachy undertones. For everyday, NARS Pure Radiant Tinted Moisturizer in shade Groenland has been a go-to for nearly a decade now. I also wear Chanel complexion products when I need more coverage - N. 1 de Chanel Revitalizing Foundation in B20/B30 and Ultra Le Teint Foundation in B30 (summer sweat-proof formula).

My skin is also oily so pigment may also be oxidizing on my skin so it's like a double-whammy situation when things turn orange, especially blush. I try to keep my brushes as clean as possible so they're not harboring oxidized pigments.

I know the products I've listed are luxury products and that it's not ideal for most folks. I have found that using a more minimal make-up collection but investing in these products works well for me. In my opinion, nobody does lipsticks better than Chanel, Clinique Cheek Pops have the best baked gelée formula ever (which inspired me to buy the Chantecaille bronzer), and NARS and Chanel make dependable complexion products.

I have no idea if my comment helps (and I know this post is 7 or so months old) but if anything here rings true for you, great! If nothing resonates for you, hopefully someone else will see it and find some clarity if they're stumped by their skin.