Color

#436f8e

#436f8e
hex#436f8e
rgbrgb(67, 111, 142)
hslhsl(205, 36%, 41%)
oklchoklch(0.523 0.069 240.6)
Closest name: Harbour Blue (#417491)Relative luminance 0.1452

Colors that go with #436f8e

Charcoal, Royal Blue 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 →

#8e6243

#438e88 · #43498e

#8e436f · #6f8e43

Split-complementary

Open in tool →

#8e4349 · #8e8843

#88438e · #8e6243 · #498e43

Contrast

#436f8e as textRatioAAAA largeAAAFix
Aaon white
5.38:1passpassfail
  • AAA: use #375c76 as the text (7.11:1)
Aaon black
3.9:1failpassfail
  • AA: use #497a9c as the text (4.55:1)
  • AAA: use #719dbc as the text (7.25:1)
  • AA: or shift the background to #ebebeb (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #436f8e as the background.

Brands using this color

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

Fonts for this mood

#436f8e reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #436f8e
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 #436f8e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/436f8e-9cafc4-df4e58-1f212d-e9f1f0?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