Color

#19a440

#19a440
hex#19a440
rgbrgb(25, 164, 64)
hslhsl(137, 74%, 37%)
oklchoklch(0.629 0.179 147)
Closest name: Fennel Fiasco (#00aa44)Relative luminance 0.2713

Colors that go with #19a440

Charcoal, Blue and Crimson 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 →

#a4197d

#37a419 · #19a486

#4019a4 · #a44019

Split-complementary

Open in tool →

#8619a4 · #a41937

#1937a4 · #a4197d · #a48619

Contrast

#19a440 as textRatioAAAA largeAAAFix
Aaon white
3.27:1failpassfail
  • AA: use #148534 as the text (4.74:1)
  • AAA: use #0f6628 as the text (7.12:1)
  • AA: or shift the background to #262626 (4.63:1)
Aaon black
6.43:1passpassfail
  • AAA: use #1aad44 as the text (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #19a440 as the background.

Brands using this color

Palettes built around it

mcpConnect your agent — build around #19a440
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 #19a440 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/19a440-a2bead-bb59d4-1f2d29-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