Color

#75e421

#75e421
hex#75e421
rgbrgb(117, 228, 33)
hslhsl(94, 78%, 51%)
oklchoklch(0.82 0.235 136.1)
Closest name: Becquerel (#4bec13)Relative luminance 0.5938

Colors that go with #75e421

Violet, Dark Orange 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 →

#8f21e4

#d7e421 · #21e42e

#2175e4 · #e42175

Split-complementary

Open in tool →

#2e21e4 · #e421d7

#21d7e4 · #8f21e4 · #e42e21

Contrast

#75e421 as textRatioAAAA largeAAAFix
Aaon white
1.63:1failfailfail
  • AA: use #428410 as the text (4.63:1)
  • AAA: use #32640c as the text (7.09:1)
  • AA: or shift the background to #545454 (4.64:1)
  • AAA: or shift the background to #383838 (7.19:1)
Aaon black
12.88:1passpasspassPasses 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 #75e421 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 #75e421
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 #75e421 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/75e421-abbea2-5a4edf-1f2d1f-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