Color

#e4f312

#e4f312
hex#e4f312
rgbrgb(228, 243, 18)
hslhsl(64, 90%, 51%)
oklchoklch(0.922 0.205 114.2)
Closest name: Banana Flash (#eefe02)Relative luminance 0.8064

Colors that go with #e4f312

Blue, Charcoal and Crimson 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 →

#2112f3

#f39112 · #73f312

#12e4f3 · #f312e4

Split-complementary

Open in tool →

#1273f3 · #9112f3

#12f391 · #2112f3 · #f31273

Contrast

#e4f312 as textRatioAAAA largeAAAFix
Aaon white
1.23:1failfailfail
  • AA: use #717906 as the text (4.73:1)
  • AAA: use #565c05 as the text (7.17:1)
  • AA: or shift the background to #666666 (4.68:1)
  • AAA: or shift the background to #4a4a4a (7.23:1)
Aaon black
17.13:1passpasspassPasses 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 #e4f312 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 #e4f312
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 #e4f312 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/e4f312-b9bea2-4e8adf-262d1f-f1eee9?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