Color

#3c8b89

#3c8b89
hex#3c8b89
rgbrgb(60, 139, 137)
hslhsl(178, 40%, 39%)
oklchoklch(0.587 0.077 193)
Closest name: Highlands (#449084)Relative luminance 0.2123

Colors that go with #3c8b89

Charcoal, Copper and Cobalt 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 →

#8b3c3e

#3c8b61 · #3c668b

#893c8b · #8b893c

Split-complementary

Open in tool →

#8b3c66 · #8b613c

#613c8b · #8b3c3e · #668b3c

Contrast

#3c8b89 as textRatioAAAA largeAAAFix
Aaon white
4:1failpassfail
  • AA: use #37817e as the text (4.56:1)
  • AAA: use #29605f as the text (7.16:1)
  • AA: or shift the background to #141414 (4.6:1)
Aaon black
5.25:1passpassfail
  • AAA: use #46a4a1 as the text (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3c8b89 as the background.

Brands using this color

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

Palettes built around it

mcpConnect your agent — build around #3c8b89
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 #3c8b89 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3c8b89-a2bcbe-d45999-1f282d-e9f1ed?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