Color

#3ab8df

#3ab8df
hex#3ab8df
rgbrgb(58, 184, 223)
hslhsl(194, 72%, 55%)
oklchoklch(0.731 0.12 223.2)
Closest name: Blue Martini (#52b4d3)Relative luminance 0.4051

Colors that go with #3ab8df

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 →

#df603a

#3adfb3 · #3a66df

#df3ab8 · #b8df3a

Split-complementary

Open in tool →

#df3a66 · #dfb33a

#b33adf · #df603a · #66df3a

Contrast

#3ab8df as textRatioAAAA largeAAAFix
Aaon white
2.31:1failfailfail
  • AA: use #1a7f9e as the text (4.59:1)
  • AAA: use #135f76 as the text (7.18:1)
  • AA: or shift the background to #3d3d3d (4.71:1)
  • AAA: or shift the background to #1f1f1f (7.14:1)
Aaon black
9.1:1passpasspassPasses 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 #3ab8df as the background.

Brands using this color

Fonts for this mood

#3ab8df reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3ab8df
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 #3ab8df and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3ab8df-9cb6c4-df4e72-1f242d-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