Color

#51170b

#51170b
hex#51170b
rgbrgb(81, 23, 11)
hslhsl(10, 76%, 18%)
oklchoklch(0.298 0.089 33.5)
Closest name: Chocolate Rush (#4e1b0b)Relative luminance 0.0239

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0b4551

#510b22 · #513a0b

#0b5117 · #170b51

Split-complementary

Open in tool →

#0b513a · #0b2251

#22510b · #0b4551 · #3a0b51

Contrast

#51170b as textRatioAAAA largeAAAFix
Aaon white
14.22:1passpasspassPasses AAA — no fix needed.
Aaon black
1.48:1failfailfail
  • AA: use #d73c1d as the text (4.55:1)
  • AAA: use #e9755d as the text (7.17:1)
  • AA: or shift the background to #919191 (4.51:1)
  • AAA: or shift the background to #b8b8b8 (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #51170b 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

#51170b reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #51170b
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

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

analyze #51170b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51170b-c4a79c-62cbaa-2d281f-f1e9ec?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