Color

#3f641b

#3f641b
hex#3f641b
rgbrgb(63, 100, 27)
hslhsl(90, 57%, 25%)
oklchoklch(0.459 0.11 132.5)
Closest name: Greenhouse (#3e6334)Relative luminance 0.1025

Colors that go with #3f641b

Charcoal, Crimson and Denim 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#401b64

#64641b · #1b641b

#1b4064 · #641b40

Split-complementary

Open in tool →

#1b1b64 · #641b64

#1b6464 · #401b64 · #641b1b

Contrast

#3f641b as textRatioAAAA largeAAAFix
Aaon white
6.89:1passpassfail
  • AAA: use #3d601a as the text (7.28:1)
Aaon black
3.05:1failpassfail
  • AA: use #548424 as the text (4.7:1)
  • AAA: use #6ba82e as the text (7.27:1)
  • AA: or shift the background to #d1d1d1 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3f641b 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

#3f641b reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3f641b
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 #3f641b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f641b-adbea2-514edf-202d1f-f1f1e9?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