Color

#3b474e

#3b474e
hex#3b474e
rgbrgb(59, 71, 78)
hslhsl(202, 14%, 27%)
oklchoklch(0.39 0.02 233.6)
Closest name: Arsenic (#3b444b)Relative luminance 0.0599

Colors that go with #3b474e

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4e423b

#3b4e4c · #3b3e4e

#4e3b47 · #474e3b

Split-complementary

Open in tool →

#4e3b3e · #4e4c3b

#4c3b4e · #4e423b · #3e4e3b

Contrast

#3b474e as textRatioAAAA largeAAAFix
Aaon white
9.56:1passpasspassPasses AAA — no fix needed.
Aaon black
2.2:1failfailfail
  • AA: use #657a86 as the text (4.68:1)
  • AAA: use #8598a3 as the text (7.02:1)
  • AA: or shift the background to #b3b3b3 (4.56:1)
  • AAA: or shift the background to #dedede (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3b474e 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

#3b474e reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3b474e
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 #3b474e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3b474e-9cb1c4-df4e5f-1f222d-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