Valspar UK Blue Boulder R266B

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What are Valspar UK Blue Boulder undertones?
Is Blue Boulder R266B cool or warm?
How light temperature affects on Blue Boulder
Monochromatic color scheme
Complementary color scheme
Color comparison and matching
Color codes
Color equivalents

Official page:	Blue Boulder R266B
Code:	R266B
Name:	Blue Boulder
Brand:	Valspar UK

What color is Valspar UK Blue Boulder?

Valspar UK Blue Boulder R266B is a muted blue-green with a softly greyed cast, sitting at a medium-dark depth. Its low saturation keeps it grounded rather than bright, making the blue and green notes feel restrained and architectural. In cool daylight, this shade can appear more blue-grey, while warmer lamps tend to draw out its dusky green side. It suits studies, bathrooms, hallways, and fitted cabinetry, especially alongside chalky whites, warm stone, aged brass, and natural oak. For contrast, pair Blue Boulder with pale clay or muted blush accents rather than sharp, icy whites.

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What are Valspar UK Blue Boulder undertones?

Blue Boulder is a midtone, very muted deep teal-gray. The HEX sample has a subtle teal bias, but its low chroma turns that hue into a neutral-looking color rather than a clear teal. Warm bulbs may gray the color down, while cool daylight usually makes its blue or teal direction clearer.

HEX value:

#627777

RGB code:

98, 119, 119

Is Valspar UK Blue Boulder cool or warm?

warm

cool

With a hue of 180°, this dark blue leans cool, but it is near the neutral line and may feel warmer in certain lighting.

R266B Blue Boulder HSL code: 180, 10%, 43%

Hue - degree on a color wheel from 0 to 360. 0 is red, 120 is green, and 240 is blue.
Saturation is expressed as a percentage. At 0%, it appears as a shade of grey, and at 100%, it is in full color.
Lightness is also a percentage value. 0% is black, and 100% is white.

How light temperature affects Blue Boulder

Natural Lighting. During the day, natural light shifts from about 2000 K at sunrise/sunset to 5500–6500 K at noon.

Sunrise

Morning

Noon

Afternoon

Sunset

In addition, natural-light temperature depends on its direction:

Direction of sunlight	Visible temp.	Hue	Duration
North	Cool	Bluish	All day
East	Warm	Yellow	Before noon
West	Warm	Orange-red	After noon
South	Warm	Orange-yellow	All day

Artificial Lighting. When choosing bulbs, pay attention to their color temperature in Kelvins.
Use the slider to see how this dark blue shade looks under different lighting:

4000K

2000K

3000K

4000K

5000K

6000K

7000K

Coordinating colors.
Colors that go with Valspar UK Blue Boulder:

Monochromatic color scheme

This scheme consists of various shades, tints, and tones of a single color. While it offers a perfect combination of hues, without accent décor it may become monotonous.

Lighter shades

R266B
Blue Boulder

Darker shades

R266B
Blue Boulder

Complementary color scheme

This color scheme is a combination of two shades that are opposite each other on the color wheel. The high contrast between these colors creates a vibrant and dynamic visual effect. For the color Blue Boulder with a green hue, complementary colors are those with a red hue close to 0, such as Valspar UK Rose Satin Slippers and Hazy Earth.

R266B
Blue Boulder

Compare
Valspar UK
Blue Boulder R266B
to any other colors