Color

#3aa0cf

#3aa0cf
hex#3aa0cf
rgbrgb(58, 160, 207)
hslhsl(199, 61%, 52%)
oklchoklch(0.667 0.115 232.4)
Closest name: Blue Burst (#309cd0)Relative luminance 0.3055

Colors that go with #3aa0cf

Charcoal, Bronze 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.

Real palettes that use #3aa0cf

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cf693a

#3acfb4 · #3a55cf

#cf3aa0 · #a0cf3a

Split-complementary

Open in tool →

#cf3a55 · #cfb43a

#b43acf · #cf693a · #55cf3a

Contrast

#3aa0cf as textRatioAAAA largeAAAFix
Aaon white
2.95:1failfailfail
  • AA: use #287da4 as the text (4.61:1)
  • AAA: use #1e5e7b as the text (7.14:1)
  • AA: or shift the background to #2e2e2e (4.6:1)
  • AAA: or shift the background to #000000 (7.11:1)
Aaon black
7.11:1passpasspassPasses 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 #3aa0cf 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

#3aa0cf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3aa0cf
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 #3aa0cf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3aa0cf-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