brandsweets

Color

#11bbb2

#11bbb2
hex#11bbb2
rgbrgb(17, 187, 178)
hslhsl(177, 83%, 40%)
oklchoklch(0.715 0.122 188.6)
Closest name: lightseagreen (#20b2aa)Relative luminance 0.3887
Vivid
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
11bbb2bb111a

#bb111a

Analogous

Open in tool →
11bbb211bb5e116ebb

#11bb5e · #116ebb

Triadic

Open in tool →
11bbb2b211bbbbb211

#b211bb · #bbb211

Split-complementary

Open in tool →
11bbb2bb116ebb5e11

#bb116e · #bb5e11

Tetradic

Open in tool →
11bbb25e11bbbb111a6ebb11

#5e11bb · #bb111a · #6ebb11

Contrast

#11bbb2 as textRatioAAAA largeAAAFix
Aaon white
2.39:1failfailfail
  • AA: use #0c837d as the text (4.61:1)
  • AAA: use #09625e as the text (7.19:1)
  • AA: or shift the background to #3d3d3d (4.54:1)
  • AAA: or shift the background to #1c1c1c (7.12:1)
Aaon black
8.77:1passpasspassPasses 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 #11bbb2 as the background.

Brands using this color

mcpConnect your agent — build around #11bbb2
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 #11bbb2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/11bbb2-a2bcbe-d4599b-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