NEUTRALS
Mopboard Black
#373839
Mopboard Black is #373839 in HEX — rgb(55, 56, 57), hsl(210°, 2%, 22%), cmyk(4%, 2%, 0%, 78%).
Mopboard Black pulls into the deep end of the neutrals spectrum — HSL 210°, 2%, 22%. The neutral saturation makes it near-neutral and forgiving, and the hue reads cool. In interior projects it shines on main walls, trims, ceilings — versatile across nearly any style. Reads best alongside soft whites, natural wood, matte black trim, linen.
Color Codes
Paint Matches — this color across 16 brands
Light Reflectance & Undertone
Light Reflectance Value (LRV)
4/100
Very Dark
Absorbs almost all light — dramatic and cocooning. Needs strong artificial lighting and works best as an accent or in well-lit rooms.
Undertone
A near-neutral with a subtle neutral violet undertone — it will pick up colour from surrounding surfaces and shift noticeably under different light.
Color Theory
Complementary
Analogous
Triadic
Split-Complementary
Tetradic
Monochromatic
Rectangle
Compound
Shades & Tints
Shades and tints of Mopboard Black run from a pale tint down to a deep shade — same hue and saturation, lightness stepped. Each rung below shows its exact HEX code; tap any to copy it.
Variations
Lighter
Darker
Saturation
Interior Use
Best Rooms
living rooms, bedrooms, kitchens
Best Uses
main walls, trim, accents
Pairs With
soft whites, natural wood, brass, matte black trim
Accessibility (WCAG)
Deuteranopia
Protanopia
Tritanopia
Color Psychology
Quiet · Versatile
Mopboard Black gets out of the way so the architecture and the people in the room do the work. The right neutral is never a default — it reads warm or cool, dusty or sharp depending on its undertone, and that undertone is what makes or breaks the room.
How it looks under different light
Pairs With
Paint Info
Brand · Product Line
Benjamin Moore / Aura Interior (for richer color depth in deep tones)
Recommended Finishes
Matte (walls) · Pearl (trim) · Satin (doors)
Deep colors look best in matte — gloss exaggerates surface flaws. Reserve subtle sheen for trim, doors, and high-touch areas.
Best Surfaces
Accent walls · Doors · Cabinetry · Built-ins
Coverage & Dry Time
Typical coverage 350-400 sq ft per gallon over a primed surface.
Touch-dry in ~1 hour. Recoat after 4 hours. Full cure 7-14 days.
Primer
Tinted primer in a similar value is highly recommended — saves a coat and prevents the wall colour from washing the surface.
Application Tip
Use a 9" microfiber roller on walls and a 2.5" angled sash brush for trim cuts. Two coats minimum for even depth.
Paint Calculator
You'll need
4.0 litres
1.06 US gallons · room for one touch-up coat. Buy slightly more to ensure single-batch match.
Code Snippets
color: #373839;background-color: #373839;--color-mopboard-black: #373839;colors: { 'mopboard-black': '#373839' }bg-[#373839] text-[#373839]$mopboard-black: #373839;Similar Colors
Our color tools run on our own catalogue of 26,000+ real paint colors across 16 brands — Benjamin Moore, Sherwin-Williams, Behr, Dulux, RAL and more — with the color math (HSL and CIELAB matching) computed in-house, not scraped from summaries. Every color you pick maps to a real, buyable paint with its code, so what you see here you can actually take to the store. We review and update these tools and their data regularly.
Created by Denis Kataev, founder of DSGN.HOUSE — a software engineer and digital entrepreneur building professional color-design tools for everyone.
Frequently Asked Questions
What color is #373839?
#373839 is Mopboard Black, a deep neutral with a cool undertone.
Is #373839 warm or cool?
Mopboard Black reads cool, which influences how it interacts with surrounding tones and natural light.
What rooms work best with Mopboard Black?
Mopboard Black works well in living rooms, bedrooms, kitchens. Designers typically use it for main walls, trim, accents.
What colors pair well with Mopboard Black?
Mopboard Black pairs naturally with soft whites, natural wood, brass, matte black trim. Its complementary color is also a strong contrast option for accents.
Where can I download Mopboard Black?
You can download Mopboard Black on DSGN.HOUSE in 15 designer formats including CSS gradient, Figma, Procreate swatches, Tailwind config, Adobe ASE, SVG, and 4K wallpapers — all free.
What's the hex code for Mopboard Black?
The hex code is #373839. In RGB it's 55, 56, 57, and in HSL it's 210°, 2%, 22%.