Color

#645f17

#645f17
hex#645f17
rgbrgb(100, 95, 23)
hslhsl(56, 63%, 24%)
oklchoklch(0.476 0.09 105.3)
Closest name: Ayahuasca Vine (#665500)Relative luminance 0.1096

Colors that go with #645f17

Charcoal, Royal Blue and Champagne 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 #645f17

Tints & shades

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

Harmonies

Complementary

Open in tool →

#171c64

#643817 · #426417

#17645f · #5f1764

Split-complementary

Open in tool →

#174264 · #381764

#176438 · #171c64 · #641742

Contrast

#645f17 as textRatioAAAA largeAAAFix
Aaon white
6.58:1passpassfail
  • AAA: use #5b5715 as the text (7.45:1)
Aaon black
3.19:1failpassfail
  • AA: use #817a1d as the text (4.73:1)
  • AAA: use #a29a25 as the text (7.19:1)
  • AA: or shift the background to #d6d6d6 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #645f17 as the background.

Brands using this color

Fonts for this mood

#645f17 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #645f17
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 #645f17 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/645f17-bdbea2-4e9edf-282d1f-f1ede9?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