Harper's Blue is a calming choice — works as both a whole-house neutral when lightened and a dramatic anchor when deepened to navy. At LRV 42 it carries real depth without going dark — a good choice for accent walls, libraries, and rooms with abundant natural light. Skip it in low-light north-facing rooms unless you want a deliberately cool, cocooning effect, since blue can read chilly there.
Ref. #9CB1BF · 70BG 43/103
Harper's Blue
42%LRV Value
Harper's Blue Technical Profile
What color is PPG Harper's Blue (70BG 43/103)? It's a medium cool blue — hex #9CB1BF, LRV 42. The closest cross-brand equivalent to Harper's Blue is Behr Rainy Sidewalk — a near-identical match on the wall, with Behr Cloudless Day and Vista Paint Grand Bay also close. Its LRV of 42 gives Harper's Blue depth without going dark, which makes it a strong choice for accent walls, libraries, and rooms with abundant natural light. Pair it with cool whites like Chantilly Lace, walnut or rift-cut oak floors, and brushed nickel or polished chrome hardware. Brass accents add warmth for a layered look. At mid saturation, this color sits at a flexible mid-point — bold enough to anchor a room without dominating, and pairs cleanly with both crisp and creamy whites. Blues stay crisp under 4000K+ cool LEDs. Under 2700K warm bulbs they can read grayer or shift slightly purple — particularly true for mid-tone and saturated blues. At mid saturation the lighting shift is moderate but real — sample under both warm-bulb evening light and cool-daylight morning light before committing.
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Colors Similar to Harper's Blue
Closest digital match based on color values. Always verify with physical samples.
Rainy Sidewalk
Behr
Nearly identical
Grand Bay
Vista Paint
Nearly identical
Water Splash
Kilz
Nearly identical
In the Blue
Hirshfield's
Nearly identical
Faded Flaxflower
Sherwin-Williams
Nearly identical
Kittiwake
Farrow & Ball
Nearly identical
Country Air
Dunn-Edwards
Nearly identical
Winter Lake
Benjamin Moore
Nearly identical
Recommended Pairings
Colors That Work With Harper's Blue
Timeless pairing with clean white trim and a tonal accent wall
Side Walls
Harper's Blue
#9CB1BF
Accent Wall
Tonal Shift
A warm shift that adds depth without clashing.
#8589AD
Trim & Molding
Pure White
Crisp white trim for a clean, traditional look.
#FFFFFF
Color Palettes for Harper's Blue
Color harmonies based on color theory — each swatch links to the closest matching paint.
Opposite on the color wheel — creates vibrant contrast
Harper's Blue Room Palettes
Color schemes built around this color — each swatch links to the closest matching paint.
Warm & Inviting
Warm tones with cozy appeal — welcoming and comfortable
Cool & Calm
Cool hues with soft contrast — serene and restful
Bold Contrast
Complementary hues with punch — dynamic and striking
Similar PPG Colors
Other PPG colors close to Harper's Blue.
More blue colors from other brands
Cross-brand colors in the blue family — useful when you want a similar look from a different brand.
Harper's Blue — Frequently Asked Questions
What colors match Harper's Blue from other brands?
The closest cross-brand equivalents to Harper's Blue are Rainy Sidewalk by Behr (a near-identical match), Cloudless Day by Behr (a near-identical match), Grand Bay by Vista Paint (a near-identical match). These are ranked with the CIEDE2000 color-difference formula, which scores how similar two colors actually look to the eye rather than matching them by name — so they're the best options for getting Harper's Blue's look in a brand your local store carries. Always confirm with a physical sample, since sheen and lighting shift the final result.
What is the LRV of Harper's Blue?
Harper's Blue has a Light Reflectance Value (LRV) of 42.3, on a scale where 0 is pure black and 100 is pure white. That makes it a mid-depth color with real presence — strong on accent walls, libraries, and rooms with good natural light. LRV is the most reliable guide to how light or dark a paint will read in a real room — more dependable than the swatch on your screen, which varies by monitor.
Explore More with Harper's Blue
Related Reading
How to Match Paint Colors Across Brands
The science behind Delta E and CIEDE2000 — find a Behr equivalent of any Sherwin-Williams shade, or a Benjamin Moore alternative when your store is out of stock.
Paint Sheen Guide
Flat, eggshell, satin, or semi-gloss — the right finish for Harper's Blue depends on the room. Here's how to choose.