600 × 900
Source:https://www.color-hex.com/color-palette/5248
178 × 495
Source:https://karenhaller.com/journal/branding-why-red-yellow-is-used-by-the-fast-food-industry/
400 × 640
Source:https://en.wikipedia.org/wiki/Flag_of_Warsaw
1131 × 1600
Source:https://www.color-meanings.com/what-color-yellow-red-make-mixed/
307 × 512
Source:https://commons.wikimedia.org/wiki/File:Flag_red_yellow_5x3.svg
558 × 700
Source:https://www.geeksforgeeks.org/what-color-does-red-and-yellow-make-when-mixed/
745 × 800
Source:https://123inspiration.com/yellow-and-red-combination/
360 × 720
Source:https://stock.adobe.com/search?k\u003d%22red+yellow+background%22
563 × 894
Source:https://www.amazon.com/Triple-Stripe-Flag-Yellow/dp/B00GA62P1A
360 × 639
Source:https://stock.adobe.com/search?k\u003d%22red+yellow+background%22
