Color

#75fd21

#75fd21
hex#75fd21
rgbrgb(117, 253, 33)
hslhsl(97, 98%, 56%)
oklchoklch(0.882 0.262 137.5)
Closest name: lawngreen (#7cfc00)Relative luminance 0.7414

Colors that go with #75fd21

Violet, Charcoal 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 →

#a821fd

#e3fd21 · #21fd3b

#2175fd · #fd2175

Split-complementary

Open in tool →

#3b21fd · #fd21e3

#21e3fd · #a821fd · #fd3b21

Contrast

#75fd21 as textRatioAAAA largeAAAFix
Aaon white
1.33:1failfailfail
  • AA: use #338301 as the text (4.79:1)
  • AAA: use #276501 as the text (7.12:1)
  • AA: or shift the background to #636363 (4.53:1)
  • AAA: or shift the background to #474747 (7:1)
Aaon black
15.83:1passpasspassPasses 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 #75fd21 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 #75fd21
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 #75fd21 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/75fd21-a9bea2-624edf-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