Color

#3faed9

#3faed9
hex#3faed9
rgbrgb(63, 174, 217)
hslhsl(197, 67%, 55%)
oklchoklch(0.706 0.116 227.9)
Closest name: Cousteau (#55a9d6)Relative luminance 0.3634

Colors that go with #3faed9

Charcoal, Amber and Dark Orange 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 →

#d96b3f

#3fd9b8 · #3f61d9

#d93fae · #aed93f

Split-complementary

Open in tool →

#d93f61 · #d9b83f

#b83fd9 · #d96b3f · #61d93f

Contrast

#3faed9 as textRatioAAAA largeAAAFix
Aaon white
2.54:1failfailfail
  • AA: use #207da2 as the text (4.65:1)
  • AAA: use #185f7b as the text (7.09:1)
  • AA: or shift the background to #383838 (4.62:1)
  • AAA: or shift the background to #171717 (7.06:1)
Aaon black
8.27:1passpasspassPasses 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 #3faed9 as the background.

Brands using this color

Fonts for this mood

#3faed9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3faed9
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 #3faed9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3faed9-9cb4c4-df4e6b-1f232d-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