Color

#19fa4e

#19fa4e
hex#19fa4e
rgbrgb(25, 250, 78)
hslhsl(134, 96%, 54%)
oklchoklch(0.858 0.264 145.2)
Closest name: Cathode Green (#00ff55)Relative luminance 0.6913

Colors that go with #19fa4e

Violet, Deep Sky Blue 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 →

#fa19c6

#55fa19 · #19fabe

#4e19fa · #fa4e19

Split-complementary

Open in tool →

#be19fa · #fa1955

#1955fa · #fa19c6 · #fabe19

Contrast

#19fa4e as textRatioAAAA largeAAAFix
Aaon white
1.42:1failfailfail
  • AA: use #038722 as the text (4.67:1)
  • AAA: use #026419 as the text (7.4:1)
  • AA: or shift the background to #5e5e5e (4.58:1)
  • AAA: or shift the background to #424242 (7.09:1)
Aaon black
14.83:1passpasspassPasses 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 #19fa4e 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 #19fa4e
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 #19fa4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/19fa4e-a2beac-b559d4-1f2d29-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