Color

#288d8f

#288d8f
hex#288d8f
rgbrgb(40, 141, 143)
hslhsl(181, 56%, 36%)
oklchoklch(0.589 0.089 197)
Closest name: darkcyan (#008b8b)Relative luminance 0.2148

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8f2a28

#288f5e · #285a8f

#8f288d · #8d8f28

Split-complementary

Open in tool →

#8f285a · #8f5e28

#5e288f · #8f2a28 · #5a8f28

Contrast

#288d8f as textRatioAAAA largeAAAFix
Aaon white
3.96:1failpassfail
  • AA: use #258283 as the text (4.57:1)
  • AAA: use #1c6263 as the text (7.05:1)
  • AA: or shift the background to #171717 (4.52:1)
Aaon black
5.3:1passpassfail
  • AAA: use #2fa5a7 as the text (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #288d8f as the background.

Brands using this color

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

Fonts for this mood

#288d8f reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #288d8f
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 #288d8f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/288d8f-a2babe-d45992-1f272d-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