Color

#436ca3

#436ca3
hex#436ca3
rgbrgb(67, 108, 163)
hslhsl(214, 42%, 45%)
oklchoklch(0.527 0.099 256.2)
Closest name: Blue Triumph (#4376ab)Relative luminance 0.1456

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#a37943

#439da3 · #4943a3

#a3436c · #6ca343

Split-complementary

Open in tool →

#a34943 · #9da343

#a3439d · #a37943 · #43a349

Contrast

#436ca3 as textRatioAAAA largeAAAFix
Aaon white
5.37:1passpassfail
  • AAA: use #375986 as the text (7.15:1)
Aaon black
3.91:1failpassfail
  • AA: use #4876b1 as the text (4.5:1)
  • AAA: use #7599c7 as the text (7.14:1)
  • AA: or shift the background to #ebebeb (4.5:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #436ca3 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

#436ca3 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #436ca3
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #436ca3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/436ca3-9ca9c4-df5a4e-1f1f2d-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