Color

#3a376d

#3a376d
hex#3a376d
rgbrgb(58, 55, 109)
hslhsl(243, 33%, 32%)
oklchoklch(0.368 0.091 283.5)
Closest name: Her Highness (#432e6f)Relative luminance 0.0474

Colors that go with #3a376d

Steel Blue, Teal and 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 →

#6a6d37

#374f6d · #54376d

#6d3937 · #376d39

Split-complementary

Open in tool →

#6d5437 · #4f6d37

#6d374f · #6a6d37 · #376d54

Contrast

#3a376d as textRatioAAAA largeAAAFix
Aaon white
10.78:1passpasspassPasses AAA — no fix needed.
Aaon black
1.95:1failfailfail
  • AA: use #716db6 as the text (4.57:1)
  • AAA: use #9592c8 as the text (7.22:1)
  • AA: or shift the background to #a8a8a8 (4.54:1)
  • AAA: or shift the background to #d1d1d1 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a376d 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 #3a376d
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 #3a376d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a376d-a39cc4-dfa04e-261f2d-e9edf1?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