Color

#3a6ea1

#3a6ea1
hex#3a6ea1
rgbrgb(58, 110, 161)
hslhsl(210, 47%, 43%)
oklchoklch(0.526 0.098 249.8)
Closest name: Blue Triumph (#4376ab)Relative luminance 0.1462

Colors that go with #3a6ea1

Charcoal, Sea Green and Sienna 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 →

#a16e3a

#3aa1a1 · #3a3aa1

#a13a6e · #6ea13a

Split-complementary

Open in tool →

#a13a3a · #a1a13a

#a13aa1 · #a16e3a · #3aa13a

Contrast

#3a6ea1 as textRatioAAAA largeAAAFix
Aaon white
5.35:1passpassfail
  • AAA: use #2f5983 as the text (7.3:1)
Aaon black
3.92:1failpassfail
  • AA: use #4078b0 as the text (4.53:1)
  • AAA: use #6999c9 as the text (7:1)
  • AA: or shift the background to #ededed (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a6ea1 as the background.

Brands using this color

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

Palettes built around it

Fonts for this mood

#3a6ea1 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3a6ea1
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 #3a6ea1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a6ea1-9cabc4-df514e-1f202d-e9f1f1?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