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A match of James Hardie JH70-20 Boothbay Blue is a cool blue-gray with low chroma and a fairly deep value. It reads subdued rather than bright, with the blue softened by noticeable gray so the color stays restrained on large exterior parts.

For direct touch up on factory-finished siding or trim after shipping, installation, field cutting, or service damage, choose Original Material Match because it includes a sheen match. Custom spray paint in this color can also be used on replacement boards, vent covers, shutters, fascia pieces, brackets, fastener caps, and other small accessories that need to coordinate with James Hardie JH70-20 Boothbay Blue.

Because this is a darker, low-chroma color, substrate contrast and surface texture can show through more easily than they would with a lighter finish. A lighter or uneven base may need additional coats for even coverage, and the final look can shift with gloss level, film build, and the condition of the surface being painted.

Aged installed siding can read differently from the color reference because of weathering, chalking, fading, and batch variation. For the closest result on a specific part, compare against the actual piece being painted or an existing protected area, especially when the goal is to blend with installed material rather than coat a separate replacement part.

Similar colors:

Slate Blue
Night Gray
Lap Siding

Product Data

About James Hardie

James Hardie is a world-leading, specialized, high-technology manufacturer of a wide range of fiber-cement building materials. These materials are available in a comprehensive selection of colors.

Matching James Hardie Paint Colors

MyPerfectColor is able match all of the James Hardie colors so you can find and enjoy the colors you love. MyPerfectColor uses its expert capabilities to recreate the original James Hardie color by matching the original James Hardie color books and swatches.

The colors shown on this website are computer video simulations of the James Hardie Color and may not match James Hardie Color standards. Refer to James Hardie Publications to obtain the accurate color. Please know that MyPerfectColor is matching the original James Hardie color. If you intend to touch up paint that has been on your walls for years, know that your color has undoubtedly changed from the original due to exposure to light and age and the new paint may not match. You will achieve best results by re-coating the entire surface.

If you need more assistance, please feel free to contact us and one of our expert staff would be happy to help.

Frequently Asked Questions About Match of James Hardie™ JH70-20 Boothbay Blue *

Can I use James Hardie JH70-20 Boothbay Blue for touch up after shipping damage, installation damage, or field cutting on siding?

Yes, if you are doing direct touch up on factory-finished building materials, choose a product option that explicitly says Original Material Match. For James Hardie JH70-20 Boothbay Blue, that is the path that includes a sheen match, which matters for siding touch-up work after shipping damage, installation damage, service work, or field cutting.

MyPerfectColor can make a matched paint for this color reference, but the right product type depends on the job. For touch up on the original surface, use Original Material Match rather than a general color-matched paint format.

Will James Hardie JH70-20 Boothbay Blue match an older installed siding surface exactly, or only the original factory color reference?

A match of James Hardie JH70-20 Boothbay Blue is a factory color reference, so it is the right starting point for a matched paint order. However, an older installed surface can look different because of sun exposure, weathering, chalking, sheen change, texture, and batch variation.

That means the color reference can be correct and the repair can still read differently next to aged siding. If the area is highly visible or the finish has changed over time, an existing part or factory sample is often the safer reference than the nominal color name alone.

Which MyPerfectColor format should I order for James Hardie JH70-20 Boothbay Blue touch up versus a separate painted part?

For direct touch up on factory-finished building materials, order only a product option that explicitly says Original Material Match, because it includes a sheen match. That is the correct choice for small repairs on siding, trim, or other factory-finished surfaces.

Water-based housepaint and specialty products such as urethane or epoxy can still be color-matched to James Hardie JH70-20 Boothbay Blue, but they do not include a sheen match and should not be treated as direct touch-up products. They are better suited to separate parts, accessories, or broader repainting jobs.

How should James Hardie JH70-20 Boothbay Blue be used for siding, trim, or related exterior pieces?

Use James Hardie JH70-20 Boothbay Blue as a building-material color reference when you need paint to coordinate with siding or related exterior components. That can include trim pieces, replacement boards, soffit, fascia, shutters, vents, or other nearby accessories that need to blend with the existing finish.

If the job is direct touch up on the original factory-finished surface, choose an Original Material Match product. If you are painting a replacement part or another accessory, a MyPerfectColor match of this color reference can be the right choice even when the part itself is not the original siding panel.

For James Hardie JH70-20 Boothbay Blue, when is an existing part or factory sample a better reference than the color name alone?

An existing part or factory sample is the better reference when the installed material has aged, the area is highly visible, or the approval tolerance is tight. In those situations, James Hardie JH70-20 Boothbay Blue may be close, but the actual surface can have different sheen, texture, or weathering than the original reference.

If you can send a sample or match an existing part, that usually reduces the risk of a mismatch on the finished project. This is especially helpful when the repair must blend beside weathered siding or another exposed exterior component.

How quickly will I receive my paint matched to James Hardie JH70-20 Boothbay Blue?
All paint is custom-made to order. While most orders ship within 48 hours, the lead-time for paint made to match James Hardie JH70-20 Boothbay Blue depends on the type of paint needed. Interior and exterior house paints usually ship within 1 to 3 business days, while custom spray paint typically takes 3-5 business days to ship. The transit time depends on your location and the shipping method you choose. If your need is immediate, select Expedited Production during checkout. Most expedited production orders ship within 24 hours on business days. Please contact MyPerfectColor if you are concerned about a specific deadline. We do our best to make sure you get your paint on time. Learn more about paint lead times at MyPerfectColor.
Can I use this James Hardie JH70-20 Boothbay Blue paint to touch up my James Hardie materials?

It depends. MyPerfectColor matches the color of the James Hardie JH70-20 Boothbay Blue but may not match the sheen. If you see Custom Sheen as a sheen option, this means we also match the sheen of the material, otherwise you would need to pick the closest sheen available. However, keep in mind that our version of the James Hardie JH70-20 Boothbay Blue is based on matching an official James Hardie color sample. The color and sheen of your specific James Hardie parts may vary. If your material is not new and has been exposed to the weather, then it is likely that the color has changed over time. MyPerfectColor samples not been exposed to sunlight and weather. If you need a touch up application, you may need to send us a part so we can create a touch up solution precisely matching the current color and sheen of your specific materials.

Learn more about our color matching service.

What are the RGB, HEX and LRV values for James Hardie JH70-20 Boothbay Blue?
The RGB values for James Hardie JH70-20 Boothbay Blue are 111, 122, 125 and the HEX code is #6F7A7D. The LRV for James Hardie JH70-20 Boothbay Blue is 18.80. The LRV stands for Light Reflectance Value and measures the percentage of light that a color reflects. Learn more about Light Reflectance Values and using RGB and Hex codes for paint.
What paint type is used to make spray paint matched to James Hardie JH70-20 Boothbay Blue? And how many spray cans do I need?

MyPerfectColor uses an acrylic enamel which is a fast-drying durable coating suitable for interior or exterior use. MyPerfectColor custom spray paint matched to James Hardie JH70-20 Boothbay Blue enables you to conveniently achieve a professional spray-smooth finish in any color in any sheen. It sticks well to most surfaces including metal, plastics, powder-coatings, cabinets and primed or previously painted wood.

The MyPerfectColor 11oz spray will cover about 20 square feet per coat. Keep in mind that it is difficult to gauge spray paint need as the coverage is highly dependent on how it is applied. Learn more about how spray paint works at MyPerfectColor.

Can I paint gutters to match my James Hardie siding?
Absolutely. You can use the MyPerfectColor spray paint matching the James Hardie JH70-20 Boothbay Blue to paint your gutters to match your siding. The spray paint will enable you to conveniently achieve a spray smooth finish. Learn more about custom spray paint.
Can you paint James Hardie siding with James Hardie JH70-20 Boothbay Blue?

MyPerfectColor Paint matching the James Hardie JH70-20 Boothbay Blue can be used to paint siding and any other items you'd like to blend into your exterior such as windows, doors, lights, pipes, gutters and vents. Many types of paint are available with no minimum order quantities. MyPerfectColor offers spray paint, paint pens, touch up bottles, water-based acrylics, epoxies, urethanes and a variety of other paints. The best paint for painting siding is exterior house paint (usually low lustre sheen). Spray paint works great for windows, doors, lights, pipes, vents and more.

Paint can be purchased by choosing the paint type above. Contact MyPerfectColor support if you have specific questions about the best paint to use for your project.

How does MyPerfectColor match the James Hardie JH70-20 Boothbay Blue?

MyPerfectColor has the original James Hardie color samples. A sample of the James Hardie JH70-20 Boothbay Blue you are looking for is in our library. We are able to make paint and verify that it matches the original.

Please note that if your existing materials are not new and you are trying to touch up, they will have aged and are likely different now than they were when new. MyPerfectColor will be sending paint matching the sample at our facility which has not aged the same as your materials and may also be different due to other factors such as variations in manufacturing processes. If your match is critical, you may consider sending a part of your materials for precise color matching. Learn more about our color matching services.

Does paint matched to James Hardie JH70-20 Boothbay Blue need primer if I am painting outside?
The need for primer for JH70-20 Boothbay Blue depends on the type of paint, the substrate being painted and where it will be located. See our Primer Selection Table to see what primer you might need and learn more about when you might need a primer. Most people don't use a primer for a touch up paint application, but a primer may improve adhesion and is typically recommended for exterior applications.