Color

#03fc49

#03fc49
hex#03fc49
rgbrgb(3, 252, 73)
hslhsl(137, 98%, 50%)
oklchoklch(0.862 0.27 145)
Closest name: Cathode Green (#00ff55)Relative luminance 0.7012

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#fc03b6

#39fc03 · #03fcc6

#4903fc · #fc4903

Split-complementary

Open in tool →

#c603fc · #fc0339

#0339fc · #fc03b6 · #fcc603

Contrast

#03fc49 as textRatioAAAA largeAAAFix
Aaon white
1.4:1failfailfail
  • AA: use #018828 as the text (4.61:1)
  • AAA: use #01651d as the text (7.29:1)
  • AA: or shift the background to #5e5e5e (4.64:1)
  • AAA: or shift the background to #424242 (7.19:1)
Aaon black
15.02:1passpasspassPasses 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 #03fc49 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 #03fc49
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #03fc49 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03fc49-a2bead-bb59d4-1f2d29-ebf1e9?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