Color

#5ef651

#5ef651
hex#5ef651
rgbrgb(94, 246, 81)
hslhsl(115, 90%, 64%)
oklchoklch(0.86 0.242 142)
Closest name: Cathode Green (#00ff55)Relative luminance 0.6889

Colors that go with #5ef651

Deep Sky Blue, Violet and Charcoal 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 →

#e851f6

#b1f651 · #51f695

#515ef6 · #f6515e

Split-complementary

Open in tool →

#9551f6 · #f651b1

#51b1f6 · #e851f6 · #f69551

Contrast

#5ef651 as textRatioAAAA largeAAAFix
Aaon white
1.42:1failfailfail
  • AA: use #128807 as the text (4.61:1)
  • AAA: use #0d6605 as the text (7.19:1)
  • AA: or shift the background to #5e5e5e (4.56:1)
  • AAA: or shift the background to #424242 (7.07:1)
Aaon black
14.78:1passpasspassPasses 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 #5ef651 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 #5ef651
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 #5ef651 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5ef651-a2bea3-8d4edf-1f2d24-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