Color

#436ea3

#436ea3
hex#436ea3
rgbrgb(67, 110, 163)
hslhsl(213, 42%, 45%)
oklchoklch(0.531 0.097 254.5)
Closest name: Blue Triumph (#4376ab)Relative luminance 0.1499

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a37843

#439ea3 · #4743a3

#a3436e · #6ea343

Split-complementary

Open in tool →

#a34743 · #9ea343

#a3439e · #a37843 · #43a347

Contrast

#436ea3 as textRatioAAAA largeAAAFix
Aaon white
5.25:1passpassfail
  • AAA: use #375a86 as the text (7.07:1)
Aaon black
4:1failpassfail
  • AA: use #4878b1 as the text (4.6:1)
  • AAA: use #759ac7 as the text (7.2:1)
  • AA: or shift the background to #f0f0f0 (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #436ea3 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

#436ea3 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #436ea3
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 #436ea3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/436ea3-9ca9c4-df584e-1f202d-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