Color

#51ec8c

#51ec8c
hex#51ec8c
rgbrgb(81, 236, 140)
hslhsl(143, 80%, 62%)
oklchoklch(0.839 0.187 152.4)
Closest name: Grotesque Green (#64e986)Relative luminance 0.6363

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#ec51b0

#63ec51 · #51ecda

#8c51ec · #ec8c51

Split-complementary

Open in tool →

#da51ec · #ec5163

#5163ec · #ec51b0 · #ecda51

Contrast

#51ec8c as textRatioAAAA largeAAAFix
Aaon white
1.53:1failfailfail
  • AA: use #0f853c as the text (4.73:1)
  • AAA: use #0b652e as the text (7.2:1)
  • AA: or shift the background to #595959 (4.58:1)
  • AAA: or shift the background to #3d3d3d (7.1:1)
Aaon black
13.73:1passpasspassPasses 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 #51ec8c 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 #51ec8c
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #51ec8c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51ec8c-a2beb0-c859d4-1f2d2b-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