Color

#3b4a4e

#3b4a4e
hex#3b4a4e
rgbrgb(59, 74, 78)
hslhsl(193, 14%, 27%)
oklchoklch(0.398 0.02 215.7)
Closest name: Abyssal (#404c57)Relative luminance 0.0638

Colors that go with #3b4a4e

Blue, Blush Pink and Cadet Blue 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 →

#4e3f3b

#3b4e49 · #3b414e

#4e3b4a · #4a4e3b

Split-complementary

Open in tool →

#4e3b41 · #4e493b

#493b4e · #4e3f3b · #414e3b

Contrast

#3b4a4e as textRatioAAAA largeAAAFix
Aaon white
9.23:1passpasspassPasses AAA — no fix needed.
Aaon black
2.28:1failfailfail
  • AA: use #607980 as the text (4.54:1)
  • AAA: use #829aa1 as the text (7.09:1)
  • AA: or shift the background to #b5b5b5 (4.5:1)
  • AAA: or shift the background to #e3e3e3 (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3b4a4e 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

#3b4a4e reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3b4a4e
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 #3b4a4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3b4a4e-a2b5be-df4e75-1f242d-e9f1ef?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