Color

#288f8d

#288f8d
hex#288f8d
rgbrgb(40, 143, 141)
hslhsl(179, 56%, 36%)
oklchoklch(0.593 0.091 193.1)
Closest name: darkcyan (#008b8b)Relative luminance 0.2202

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8f282a

#288f5a · #285e8f

#8d288f · #8f8d28

Split-complementary

Open in tool →

#8f285e · #8f5a28

#5a288f · #8f282a · #5e8f28

Contrast

#288f8d as textRatioAAAA largeAAAFix
Aaon white
3.89:1failpassfail
  • AA: use #258382 as the text (4.52:1)
  • AAA: use #1b5f5e as the text (7.38:1)
  • AA: or shift the background to #171717 (4.61:1)
Aaon black
5.4:1passpassfail
  • AAA: use #2fa7a5 as the text (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #288f8d 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 #288f8d
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 #288f8d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/288f8d-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