Color

#5bf591

#5bf591
hex#5bf591
rgbrgb(91, 245, 145)
hslhsl(141, 89%, 66%)
oklchoklch(0.865 0.19 151.7)
Closest name: Illicit Green (#56fca2)Relative luminance 0.6957

Colors that go with #5bf591

Charcoal, Violet and Deep Sky Blue 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 →

#f55bbf

#72f55b · #5bf5de

#915bf5 · #f5915b

Split-complementary

Open in tool →

#de5bf5 · #f55b72

#5b72f5 · #f55bbf · #f5de5b

Contrast

#5bf591 as textRatioAAAA largeAAAFix
Aaon white
1.41:1failfailfail
  • AA: use #088734 as the text (4.64:1)
  • AAA: use #066527 as the text (7.25:1)
  • AA: or shift the background to #5e5e5e (4.61:1)
  • AAA: or shift the background to #424242 (7.14:1)
Aaon black
14.91:1passpasspassPasses 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 #5bf591 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 #5bf591
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 #5bf591 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5bf591-a2beaf-c459d4-1f2d2a-eaf1e9?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