Color

#3da3b3

#3da3b3
hex#3da3b3
rgbrgb(61, 163, 179)
hslhsl(188, 49%, 47%)
oklchoklch(0.663 0.095 209.6)
Closest name: Atlas Cedar (#5ca0a7)Relative luminance 0.3044

Colors that go with #3da3b3

Charcoal, Tomato and Copper 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 #3da3b3

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b34d3d

#3db388 · #3d68b3

#b33da3 · #a3b33d

Split-complementary

Open in tool →

#b33d68 · #b3883d

#883db3 · #b34d3d · #68b33d

Contrast

#3da3b3 as textRatioAAAA largeAAAFix
Aaon white
2.96:1failfailfail
  • AA: use #30808d as the text (4.57:1)
  • AAA: use #24616a as the text (7.02:1)
  • AA: or shift the background to #2e2e2e (4.58:1)
  • AAA: or shift the background to #000000 (7.09:1)
Aaon black
7.09:1passpasspassPasses 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 #3da3b3 as the background.

Brands using this color

Fonts for this mood

#3da3b3 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3da3b3
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 #3da3b3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3da3b3-a2b7be-df4e81-1f252d-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