Color

#3bb594

#3bb594
hex#3bb594
rgbrgb(59, 181, 148)
hslhsl(164, 51%, 47%)
oklchoklch(0.697 0.118 171.2)
Closest name: Electra (#55b492)Relative luminance 0.3612

Colors that go with #3bb594

Charcoal, Hot Pink and Midnight Blue 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 →

#b53b5b

#3bb557 · #3b98b5

#943bb5 · #b5943b

Split-complementary

Open in tool →

#b53b98 · #b5573b

#573bb5 · #b53b5b · #98b53b

Contrast

#3bb594 as textRatioAAAA largeAAAFix
Aaon white
2.55:1failfailfail
  • AA: use #2a836b as the text (4.61:1)
  • AAA: use #1f604f as the text (7.38:1)
  • AA: or shift the background to #383838 (4.59:1)
  • AAA: or shift the background to #171717 (7.02:1)
Aaon black
8.22:1passpasspassPasses 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 #3bb594 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #3bb594
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 #3bb594 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3bb594-a2beba-d459b5-1f2b2d-e9f1eb?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