Color

#436ba3

#436ba3
hex#436ba3
rgbrgb(67, 107, 163)
hslhsl(215, 42%, 45%)
oklchoklch(0.524 0.1 257)
Closest name: Blue Triumph (#4376ab)Relative luminance 0.1435

Colors that go with #436ba3

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 →

#a37b43

#439ba3 · #4b43a3

#a3436b · #6ba343

Split-complementary

Open in tool →

#a34b43 · #9ba343

#a3439b · #a37b43 · #43a34b

Contrast

#436ba3 as textRatioAAAA largeAAAFix
Aaon white
5.43:1passpassfail
  • AAA: use #385a8a as the text (7.01:1)
Aaon black
3.87:1failpassfail
  • AA: use #4a77b5 as the text (4.6:1)
  • AAA: use #7597c7 as the text (7.01:1)
  • AA: or shift the background to #ebebeb (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #436ba3 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

#436ba3 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #436ba3
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 #436ba3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/436ba3-9ca8c4-df5d4e-201f2d-e9f0f1?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