Color

#81838d

#81838d
hex#81838d
rgbrgb(129, 131, 141)
hslhsl(230, 5%, 53%)
oklchoklch(0.612 0.015 276.9)
Closest name: Aluminium (#848789)Relative luminance 0.2282

Colors that go with #81838d

Charcoal, Champagne and Copper lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Real palettes that use #81838d

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#8d8b81

#81898d · #85818d

#8d8183 · #838d81

Split-complementary

Open in tool →

#8d8581 · #898d81

#8d8189 · #8d8b81 · #818d85

Contrast

#81838d as textRatioAAAA largeAAAFix
Aaon white
3.77:1failpassfail
  • AA: use #747681 as the text (4.52:1)
  • AAA: use #55565e as the text (7.29:1)
  • AA: or shift the background to #1c1c1c (4.52:1)
Aaon black
5.56:1passpassfail
  • AAA: use #94969e as the text (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #81838d as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#81838d reads as neutral, minimal. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #81838d
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

›analyze #81838d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/81838d-a2beb0-c859d4-1f2d2b-eaf1e9?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md