Color

#3a596e

#3a596e
hex#3a596e
rgbrgb(58, 89, 110)
hslhsl(204, 31%, 33%)
oklchoklch(0.449 0.05 239)
Closest name: Atlantis (#336172)Relative luminance 0.0917

Colors that go with #3a596e

Sienna, Cadet Blue and Copper 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 #3a596e

Tints & shades

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

Harmonies

Complementary

Open in tool →

#6e4f3a

#3a6e69 · #3a3f6e

#6e3a59 · #596e3a

Split-complementary

Open in tool →

#6e3a3f · #6e693a

#693a6e · #6e4f3a · #3f6e3a

Contrast

#3a596e as textRatioAAAA largeAAAFix
Aaon white
7.41:1passpasspassPasses AAA — no fix needed.
Aaon black
2.83:1failfailfail
  • AA: use #4f7a96 as the text (4.56:1)
  • AAA: use #739bb5 as the text (7.08:1)
  • AA: or shift the background to #cccccc (4.61:1)
  • AAA: or shift the background to #fafafa (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 #3a596e as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #3a596e
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 #3a596e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a596e-9cafc4-df4e5a-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