Color

#4fd50b

#4fd50b
hex#4fd50b
rgbrgb(79, 213, 11)
hslhsl(100, 90%, 44%)
oklchoklch(0.768 0.24 139.1)
Closest name: Blinking Terminal (#66cc00)Relative luminance 0.4927

Colors that go with #4fd50b

Taupe, 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 →

#920bd5

#b4d50b · #0bd52d

#0b4fd5 · #d50b4f

Split-complementary

Open in tool →

#2d0bd5 · #d50bb4

#0bb4d5 · #920bd5 · #d52d0b

Contrast

#4fd50b as textRatioAAAA largeAAAFix
Aaon white
1.93:1failfailfail
  • AA: use #328807 as the text (4.51:1)
  • AAA: use #256605 as the text (7.04:1)
  • AA: or shift the background to #4a4a4a (4.58:1)
  • AAA: or shift the background to #2e2e2e (7.02:1)
Aaon black
10.85:1passpasspassPasses 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 #4fd50b 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 #4fd50b
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 #4fd50b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4fd50b-a8bea2-694edf-1f2d21-f0f1e9?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