Color

#4bc10b

#4bc10b
hex#4bc10b
rgbrgb(75, 193, 11)
hslhsl(99, 89%, 40%)
oklchoklch(0.715 0.221 138.7)
Closest name: Frog (#58bc08)Relative luminance 0.3966

Colors that go with #4bc10b

Blue, Charcoal and Royal Blue 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 →

#810bc1

#a6c10b · #0bc126

#0b4bc1 · #c10b4b

Split-complementary

Open in tool →

#260bc1 · #c10ba6

#0ba6c1 · #810bc1 · #c1260b

Contrast

#4bc10b as textRatioAAAA largeAAAFix
Aaon white
2.35:1failfailfail
  • AA: use #348708 as the text (4.55:1)
  • AAA: use #276506 as the text (7.12:1)
  • AA: or shift the background to #3d3d3d (4.62:1)
  • AAA: or shift the background to #1f1f1f (7.01:1)
Aaon black
8.93:1passpasspassPasses 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 #4bc10b 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 #4bc10b
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 #4bc10b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4bc10b-a8bea2-664edf-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