Color

#59fb3c

#59fb3c
hex#59fb3c
rgbrgb(89, 251, 60)
hslhsl(111, 96%, 61%)
oklchoklch(0.87 0.261 141)
Closest name: Cathode Green (#00ff55)Relative luminance 0.7144

Colors that go with #59fb3c

Violet, Deep Sky Blue and Hot Pink 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 →

#de3cfb

#b8fb3c · #3cfb7f

#3c59fb · #fb3c59

Split-complementary

Open in tool →

#7f3cfb · #fb3cb8

#3cb8fb · #de3cfb · #fb7f3c

Contrast

#59fb3c as textRatioAAAA largeAAAFix
Aaon white
1.37:1failfailfail
  • AA: use #178703 as the text (4.66:1)
  • AAA: use #116402 as the text (7.37:1)
  • AA: or shift the background to #616161 (4.51:1)
  • AAA: or shift the background to #424242 (7.32:1)
Aaon black
15.29:1passpasspassPasses 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 #59fb3c 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 #59fb3c
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 #59fb3c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/59fb3c-a3bea2-834edf-1f2d23-eef1e9?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