Color

#1bbbb9

#1bbbb9
hex#1bbbb9
rgbrgb(27, 187, 185)
hslhsl(179, 75%, 42%)
oklchoklch(0.718 0.119 193.4)
Closest name: Emerald Bliss (#4cbdac)Relative luminance 0.3928

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bb1b1d

#1bbb68 · #1b6ebb

#b91bbb · #bbb91b

Split-complementary

Open in tool →

#bb1b6e · #bb681b

#681bbb · #bb1b1d · #6ebb1b

Contrast

#1bbbb9 as textRatioAAAA largeAAAFix
Aaon white
2.37:1failfailfail
  • AA: use #128180 as the text (4.69:1)
  • AAA: use #0e6261 as the text (7.15:1)
  • AA: or shift the background to #3d3d3d (4.58:1)
  • AAA: or shift the background to #1c1c1c (7.19:1)
Aaon black
8.86:1passpasspassPasses 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 #1bbbb9 as the background.

Brands using this color

mcpConnect your agent — build around #1bbbb9
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #1bbbb9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1bbbb9-a2bbbe-d45996-1f272d-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