Color

#c3f74b

#c3f74b
hex#c3f74b
rgbrgb(195, 247, 75)
hslhsl(78, 91%, 63%)
oklchoklch(0.909 0.2 125)
Closest name: Chartreuse (#c1f80a)Relative luminance 0.7863

Colors that go with #c3f74b

Blue, Crimson and Red 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 →

#7e4bf7

#f7d44b · #6df74b

#4bc3f7 · #f74bc3

Split-complementary

Open in tool →

#4b6df7 · #d44bf7

#4bf7d4 · #7e4bf7 · #f74b6d

Contrast

#c3f74b as textRatioAAAA largeAAAFix
Aaon white
1.26:1failfailfail
  • AA: use #5a7f06 as the text (4.69:1)
  • AAA: use #466105 as the text (7.06:1)
  • AA: or shift the background to #666666 (4.57:1)
  • AAA: or shift the background to #4a4a4a (7.06:1)
Aaon black
16.73:1passpasspassPasses 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 #c3f74b 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 #c3f74b
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 #c3f74b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c3f74b-b2bea2-4e69df-232d1f-f1f0e9?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