royal blue 
noun [mass noun]
A deep, vivid blue: uniforms of royal blue and saffron [as modifier]: a royal-blue cashmere jersey...
- Adorning the deep royal-blue rug were stars marking out the constellations.
- Seventy-five of Ms. Simoni's now more than 200 frames gleam against royal-blue walls at the Pensacola Museum of Art.
- Sabrina commented on Debbie's gown, a flattering royal-blue number of mid-calf-length with a center section and sleeves of ivory brocade and illusion lace.
- well done
- well-dowered
- well drag
- well drain
- well-drained
- well-drawn
- well dressed
- well-dresser
- well dressing
- well-dried
- well drill
- well-drilled
- well driller
- well drilling
- well-driven
- well-dunged
- well earned
- well-edged
- well educated
- well-embodied
- well endowed
- well-engineered
- well enough
- Wellentheorie
- well-entrenched