Color

#3da1b3

#3da1b3
hex#3da1b3
rgbrgb(61, 161, 179)
hslhsl(189, 49%, 47%)
oklchoklch(0.658 0.095 211.6)
Closest name: Atlas Cedar (#5ca0a7)Relative luminance 0.2974

Colors that go with #3da1b3

Charcoal, Tomato 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 #3da1b3

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b34f3d

#3db389 · #3d66b3

#b33da1 · #a1b33d

Split-complementary

Open in tool →

#b33d66 · #b3893d

#893db3 · #b34f3d · #66b33d

Contrast

#3da1b3 as textRatioAAAA largeAAAFix
Aaon white
3.02:1failpassfail
  • AA: use #307f8d as the text (4.62:1)
  • AAA: use #24606a as the text (7.1:1)
  • AA: or shift the background to #2b2b2b (4.68:1)
Aaon black
6.95:1passpassfail
  • AAA: use #3ea4b6 as the text (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3da1b3 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

#3da1b3 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3da1b3
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 #3da1b3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3da1b3-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