Color

#4fa3c9

#4fa3c9
hex#4fa3c9
rgbrgb(79, 163, 201)
hslhsl(199, 53%, 55%)
oklchoklch(0.679 0.099 230.1)
Closest name: Cousteau (#55a9d6)Relative luminance 0.3207

Colors that go with #4fa3c9

Charcoal, Peru and Amber 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 →

#c9764f

#4fc9b3 · #4f66c9

#c94fa3 · #a3c94f

Split-complementary

Open in tool →

#c94f66 · #c9b34f

#b34fc9 · #c9764f · #66c94f

Contrast

#4fa3c9 as textRatioAAAA largeAAAFix
Aaon white
2.83:1failfailfail
  • AA: use #317da0 as the text (4.59:1)
  • AAA: use #255e79 as the text (7.1:1)
  • AA: or shift the background to #303030 (4.66:1)
  • AAA: or shift the background to #080808 (7.07:1)
Aaon black
7.41:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4fa3c9 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

#4fa3c9 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4fa3c9
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 #4fa3c9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4fa3c9-9cb3c4-df4e66-1f232d-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