Color

#3fbed5

#3fbed5
hex#3fbed5
rgbrgb(63, 190, 213)
hslhsl(189, 64%, 54%)
oklchoklch(0.742 0.113 212.3)
Closest name: Blue Bobbin (#52b4ca)Relative luminance 0.4269

Colors that go with #3fbed5

Charcoal, Dark Orange and Denim 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 →

#d5553f

#3fd5a0 · #3f73d5

#d53fbe · #bed53f

Split-complementary

Open in tool →

#d53f73 · #d5a03f

#a03fd5 · #d5553f · #73d53f

Contrast

#3fbed5 as textRatioAAAA largeAAAFix
Aaon white
2.2:1failfailfail
  • AA: use #208192 as the text (4.55:1)
  • AAA: use #18606d as the text (7.16:1)
  • AA: or shift the background to #424242 (4.56:1)
  • AAA: or shift the background to #242424 (7.05:1)
Aaon black
9.54:1passpasspassPasses 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 #3fbed5 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

#3fbed5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3fbed5
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 #3fbed5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fbed5-a2b7be-df4e7e-1f252d-e9f1ee?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