Color

#4091a5

#4091a5
hex#4091a5
rgbrgb(64, 145, 165)
hslhsl(192, 44%, 45%)
oklchoklch(0.615 0.084 216.5)
Closest name: Blue Moon (#3992a8)Relative luminance 0.2406

Colors that go with #4091a5

Charcoal, Copper and Cobalt Blue 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.

Real palettes that use #4091a5

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a55440

#40a587 · #405fa5

#a54091 · #91a540

Split-complementary

Open in tool →

#a5405f · #a58740

#8740a5 · #a55440 · #5fa540

Contrast

#4091a5 as textRatioAAAA largeAAAFix
Aaon white
3.61:1failpassfail
  • AA: use #387e8f as the text (4.62:1)
  • AAA: use #295d6a as the text (7.32:1)
  • AA: or shift the background to #1f1f1f (4.56:1)
Aaon black
5.81:1passpassfail
  • AAA: use #47a1b8 as the text (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4091a5 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

#4091a5 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4091a5
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 #4091a5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4091a5-a2b5be-df4e77-1f242d-e9f1ef?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