Color

#3a476e

#3a476e
hex#3a476e
rgbrgb(58, 71, 110)
hslhsl(225, 31%, 33%)
oklchoklch(0.405 0.068 269.2)
Closest name: Bonne Nuit (#3a4866)Relative luminance 0.0653

Colors that go with #3a476e

Steel Blue, Blue 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 →

#6e613a

#3a616e · #473a6e

#6e3a47 · #476e3a

Split-complementary

Open in tool →

#6e473a · #616e3a

#6e3a61 · #6e613a · #3a6e47

Contrast

#3a476e as textRatioAAAA largeAAAFix
Aaon white
9.11:1passpasspassPasses AAA — no fix needed.
Aaon black
2.31:1failfailfail
  • AA: use #6275ac as the text (4.66:1)
  • AAA: use #8795c0 as the text (7.09:1)
  • AA: or shift the background to #b8b8b8 (4.59:1)
  • AAA: or shift the background to #e3e3e3 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a476e 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 #3a476e
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 #3a476e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a476e-9ca1c4-df754e-221f2d-e9eff1?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