Color

#3d77ae

#3d77ae
hex#3d77ae
rgbrgb(61, 119, 174)
hslhsl(209, 48%, 46%)
oklchoklch(0.555 0.105 249.1)
Closest name: Blue Triumph (#4376ab)Relative luminance 0.1724

Colors that go with #3d77ae

Charcoal, Sienna and Amber 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 →

#ae733d

#3daeac · #3d3fae

#ae3d77 · #77ae3d

Split-complementary

Open in tool →

#ae3d3f · #aeac3d

#ac3dae · #ae733d · #3fae3d

Contrast

#3d77ae as textRatioAAAA largeAAAFix
Aaon white
4.72:1passpassfail
  • AAA: use #2e5b84 as the text (7.13:1)
Aaon black
4.45:1failpassfail
  • AA: use #3e7ab1 as the text (4.62:1)
  • AAA: use #689bca as the text (7.13:1)
  • AA: or shift the background to #fafafa (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3d77ae as the background.

Brands using this color

Fonts for this mood

#3d77ae reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3d77ae
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 #3d77ae and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d77ae-9cacc4-df4e4e-1f212d-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