Color

#288f5f

#288f5f
hex#288f5f
rgbrgb(40, 143, 95)
hslhsl(152, 56%, 36%)
oklchoklch(0.58 0.119 158.4)
Closest name: seagreen (#2e8b57)Relative luminance 0.2092

Colors that go with #288f5f

Charcoal, Crimson and Medium Violet Red 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 →

#8f2858

#288f2c · #288c8f

#5f288f · #8f5f28

Split-complementary

Open in tool →

#8f288c · #8f2c28

#2c288f · #8f2858 · #8c8f28

Contrast

#288f5f as textRatioAAAA largeAAAFix
Aaon white
4.05:1failpassfail
  • AA: use #258357 as the text (4.71:1)
  • AAA: use #1c6342 as the text (7.21:1)
  • AA: or shift the background to #141414 (4.55:1)
Aaon black
5.18:1passpassfail
  • AAA: use #30ab72 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 #288f5f 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 #288f5f
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 #288f5f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/288f5f-a2beb4-d459ce-1f2d2d-e9f1ea?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