Color

#3d474c

#3d474c
hex#3d474c
rgbrgb(61, 71, 76)
hslhsl(200, 11%, 27%)
oklchoklch(0.391 0.016 229.3)
Closest name: Arsenic (#3b444b)Relative luminance 0.0602

Colors that go with #3d474c

Blue, Blush Pink and Burlywood 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 #3d474c

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4c423d

#3d4c4a · #3d404c

#4c3d47 · #474c3d

Split-complementary

Open in tool →

#4c3d40 · #4c4a3d

#4a3d4c · #4c423d · #404c3d

Contrast

#3d474c as textRatioAAAA largeAAAFix
Aaon white
9.53:1passpasspassPasses AAA — no fix needed.
Aaon black
2.2:1failfailfail
  • AA: use #66777f as the text (4.51:1)
  • AAA: use #8898a0 as the text (7.05:1)
  • AA: or shift the background to #b3b3b3 (4.54:1)
  • AAA: or shift the background to #dedede (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 #3d474c 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

#3d474c reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3d474c
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 #3d474c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d474c-9cb2c4-df4e64-1f232d-e9f1f0?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