Color

#644f63

#644f63
hex#644f63
rgbrgb(100, 79, 99)
hslhsl(303, 12%, 35%)
oklchoklch(0.456 0.042 327.8)
Closest name: Fedora (#625665)Relative luminance 0.092

Colors that go with #644f63

Teal, Sea Green 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 #644f63

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4f6450

#5a4f64 · #644f58

#63644f · #4f6364

Split-complementary

Open in tool →

#58644f · #4f645a

#645a4f · #4f6450 · #4f5864

Contrast

#644f63 as textRatioAAAA largeAAAFix
Aaon white
7.39:1passpasspassPasses AAA — no fix needed.
Aaon black
2.84:1failfailfail
  • AA: use #896c88 as the text (4.56:1)
  • AAA: use #a790a6 as the text (7.18:1)
  • AA: or shift the background to #cccccc (4.6:1)
  • AAA: or shift the background to #fafafa (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #644f63 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

#644f63 reads as warm, muted, editorial. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #644f63
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 #644f63 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/644f63-c19fbb-8fcb62-2d1f26-eee9f1?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