Preheat the broiler. Place the bell peppers on a large baking sheet and broil, turning, until the bell peppers have blackened, about 5 minutes. Transfer to a bowl and cover with plastic wrap. Let stand until cooled.
While the peppers cool, make the creamy garlic lime dip. Stir the sour cream, lime juice, cilantro, coriander, zest, garlic, 1/2 teaspoon salt and 1/4 teaspoon pepper in a small bowl until smooth. Stir in 1 to 2 tablespoons of water to adjust the consistency to your liking.
Rub the skin off the bell peppers and remove the stem and seeds. Put in the bowl of a food processor or the carafe of a blender. Add the tomato, piquante peppers, onion, lime juice, cumin, 1/2 teaspoon salt and 1/4 teaspoon pepper. Pulse until chunky. Transfer to a serving bowl and season with the hot sauce, salt and pepper.
Serve the blue corn tortilla chips with the red pepper sauce and white dip.
From Food Network Kitchens