Sudden Sapphire
600B-6 · #4F76E7 · LRV 20 — cool blue tone, dark — high drama, needs strong daylight or warm bulbs.
- 1Hale Navy8
- 2Waterloo13
- 3Sudden Sapphire20
- 4Williamsburg Wedgwood Blue28
- 5Resolute Blue40
What Color Is Sudden Sapphire, Really?
Sudden Sapphire reads as a cool blue tone — dark — high drama, needs strong daylight or warm bulbs. The notes below cover how Behr 600B-6 behaves in different light and the closest matches at competing US brands.
Best Rooms and Uses for Sudden Sapphire
Sudden Sapphire works best as a feature — a single wall, built-ins, a study or dining room — rather than wrapping a whole bright space. Blues calm a room, which makes them popular in bedrooms, bathrooms and home offices.
How Lighting Changes Sudden Sapphire
With an LRV of 20, Sudden Sapphire is a deep, dramatic shade. It soaks up light in north-facing rooms and looks richest where strong daylight hits it. Its blue undertone is the part to watch: it gets picked up by whatever sits next to it, so test it against your trim, floor and the room's main light before committing. Warm artificial light softens it; cool LED can make it look flat, so match your bulbs to the mood you want.
Most complaints about Sudden Sapphire are a light mismatch. Upload a photo of your actual room and see it on your walls — then ask for the same wall in north light or evening lamps before you buy a single sample.
Similar Behr Colors
The nearest shades to Sudden Sapphire within Behr's own range, ranked by perceptual color distance — useful when you want the same look a touch lighter, darker, or warmer.
WCAG 2.1: AA is 4.5 : 1 for normal text, 3 : 1 for large text, AAA is 7 : 1.
Coordinated palette
Generated by hue-rotating #4F76E7 in HSL space. Pair Sudden Sapphire with one accent and one neutral — the swatches below are starting points, not final picks.
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