Bell peppers come in all colors, shapes, and sizes.However, they all taste a little bit different, and red bell peppers are a little sweeter than yellow bell peppers. In the same fashion, yellow bell peppers are slightly sweeter than green bell peppers.
Technically bell peppers are a fruit, but since most people use them as a vegetable, they make this list.
Nutritionally, each color pepper has a very slight difference, but they are fairly similar.
Here is the nutrition profile for a large yellow bell pepper (4);
Calories: 27 kcal
Carbohydrate: 6.3 g
Fiber: 0.9 g
Sugar: ~ g
Fat: 0.2 g
Protein: 1.0 g
Vitamin C: 306% RDA
Vitamin B6: 8% RDA
Folate: 6% RDA
Potassium: 6% RDA
Manganese: 6% RDA
Key Point: Bell peppers provide a significant amount of vitamin C.
Bell pepper, (Capsicum annuum), also called sweet pepper or capsicum, pepper cultivar in the nightshade family (Solanaceae), grown for its thick, mild fruits. Bell peppers are used in salads and in cooked dishes and are high in vitamin A and vitamin C. The large furrowed fruits are technically berries and can be green, red, yellow, or orange. Bell pepper plants are grown as annuals, and the green varieties are harvested before the appearance of red or yellow pigment—generally about 60–80 days after transplanting.