Yellow is commonly linked to feelings of happiness and joy. It is often used to create cheerful and positive environments. It is also known to evoke feelings of:

• Warmth: Yellow is associated with the warmth of the sun and can create a welcoming and inviting atmosphere.
• Optimism: The bright and light nature of yellow often symbolizes optimism and positivity.
• Energy: Yellow is perceived as energetic and lively. It can stimulate mental activity and generate a sense of excitement.
• Attention-grabbing: Due to its brightness, yellow can quickly catch the eye, which is why it's used in warning signs and advertisements.

On the flip side, very intense or saturated yellow can be overwhelming and cause visual fatigue. It can also be associated with caution or warning, potentially creating a sense of unease.

In design, avoid using bright yellow for backgrounds as it can cause severe eyestrain and hurt readability. Use it sparingly and only to attract attention to important elements.