Color

#78ef01

#78ef01
hex#78ef01
rgbrgb(120, 239, 1)
hslhsl(90, 99%, 47%)
oklchoklch(0.848 0.251 135.8)
Closest name: Becquerel (#4bec13)Relative luminance 0.6573

Colors that go with #78ef01

Deep Sky Blue, Violet and Hot Pink 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 →

#7801ef

#efef01 · #01ef01

#0178ef · #ef0178

Split-complementary

Open in tool →

#0101ef · #ef01ef

#01efef · #7801ef · #ef0101

Contrast

#78ef01 as textRatioAAAA largeAAAFix
Aaon white
1.48:1failfailfail
  • AA: use #428401 as the text (4.63:1)
  • AAA: use #306000 as the text (7.5:1)
  • AA: or shift the background to #5c5c5c (4.5:1)
  • AAA: or shift the background to #3d3d3d (7.32:1)
Aaon black
14.15:1passpasspassPasses 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 #78ef01 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 #78ef01
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 #78ef01 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/78ef01-adbea2-514edf-202d1f-f1f1e9?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