1. Of black tinged with blue
   - blue-black

See also: achromatic, neutral

• red tape
• red tide
• red trillium
• red underwing
• red valerian
• red water
• red willow
• red wine
• red wolf
• red worm
• red-backed lemming
• red-backed mouse
• red-backed sandpiper
• red-bellied snake
• red-bellied terrapin
• red-bellied turtle
• red-berried elder
• red-blind
• red-blindness
• red-blooded
• red-breasted merganser
• red-breasted nuthatch
• red-breasted sapsucker
• red-breasted snipe
• red-brown