Color

#03fc5a

#03fc5a
hex#03fc5a
rgbrgb(3, 252, 90)
hslhsl(141, 98%, 50%)
oklchoklch(0.863 0.26 146.5)
Closest name: Cathode Green (#00ff55)Relative luminance 0.7038

Colors that go with #03fc5a

Violet, Hot Pink and Plum 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 →

#fc03a5

#28fc03 · #03fcd7

#5a03fc · #fc5a03

Split-complementary

Open in tool →

#d703fc · #fc0328

#0328fc · #fc03a5 · #fcd703

Contrast

#03fc5a as textRatioAAAA largeAAAFix
Aaon white
1.39:1failfailfail
  • AA: use #018831 as the text (4.6:1)
  • AAA: use #016524 as the text (7.27:1)
  • AA: or shift the background to #5e5e5e (4.65:1)
  • AAA: or shift the background to #424242 (7.21:1)
Aaon black
15.08:1passpasspassPasses 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 #03fc5a 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 #03fc5a
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 #03fc5a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03fc5a-a2beaf-c459d4-1f2d2a-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