Color

#409cb0

#409cb0
hex#409cb0
rgbrgb(64, 156, 176)
hslhsl(191, 47%, 47%)
oklchoklch(0.646 0.091 214.5)
Closest name: Blue Moon (#3992a8)Relative luminance 0.28

Colors that go with #409cb0

Charcoal, Orange Red 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 #409cb0

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b05440

#40b08d · #4063b0

#b0409c · #9cb040

Split-complementary

Open in tool →

#b04063 · #b08d40

#8d40b0 · #b05440 · #63b040

Contrast

#409cb0 as textRatioAAAA largeAAAFix
Aaon white
3.18:1failpassfail
  • AA: use #337e8e as the text (4.65:1)
  • AAA: use #27606d as the text (7.05:1)
  • AA: or shift the background to #292929 (4.57:1)
Aaon black
6.6:1passpassfail
  • AAA: use #42a2b8 as the text (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #409cb0 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

#409cb0 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #409cb0
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 #409cb0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/409cb0-a2b6be-df4e7a-1f252d-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