Color

#27da0b

#27da0b
hex#27da0b
rgbrgb(39, 218, 11)
hslhsl(112, 90%, 45%)
oklchoklch(0.773 0.256 141.8)
Closest name: Alarming Slime (#2ce335)Relative luminance 0.506

Colors that go with #27da0b

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 →

#be0bda

#8eda0b · #0bda57

#0b27da · #da0b27

Split-complementary

Open in tool →

#570bda · #da0b8e

#0b8eda · #be0bda · #da570b

Contrast

#27da0b as textRatioAAAA largeAAAFix
Aaon white
1.89:1failfailfail
  • AA: use #188807 as the text (4.6:1)
  • AAA: use #126605 as the text (7.17:1)
  • AA: or shift the background to #4a4a4a (4.69:1)
  • AAA: or shift the background to #2e2e2e (7.19:1)
Aaon black
11.12:1passpasspassPasses 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 #27da0b 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 #27da0b
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 #27da0b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/27da0b-a2bea2-864edf-1f2d23-eef1e9?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