Color

#91ec51

#91ec51
hex#91ec51
rgbrgb(145, 236, 81)
hslhsl(95, 80%, 62%)
oklchoklch(0.856 0.207 134.8)
Closest name: Herbivore (#88ee77)Relative luminance 0.666

Colors that go with #91ec51

Violet, Deep Sky Blue and Taupe 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 →

#ab51ec

#dfec51 · #51ec5e

#5191ec · #ec5191

Split-complementary

Open in tool →

#5d51ec · #ec51df

#51dfec · #ab51ec · #ec5e51

Contrast

#91ec51 as textRatioAAAA largeAAAFix
Aaon white
1.47:1failfailfail
  • AA: use #40850f as the text (4.59:1)
  • AAA: use #31650b as the text (7.01:1)
  • AA: or shift the background to #5c5c5c (4.56:1)
  • AAA: or shift the background to #404040 (7.07:1)
Aaon black
14.32:1passpasspassPasses 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 #91ec51 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 #91ec51
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 #91ec51 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/91ec51-aabea2-5d4edf-1f2d20-f0f1e9?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