Color

#19a42b

#19a42b
hex#19a42b
rgbrgb(25, 164, 43)
hslhsl(128, 74%, 37%)
oklchoklch(0.627 0.194 144.1)
Closest name: Fennel Fiasco (#00aa44)Relative luminance 0.2693

Colors that go with #19a42b

Blue, Dodger Blue 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 →

#a41992

#4ca419 · #19a471

#2b19a4 · #a42b19

Split-complementary

Open in tool →

#7119a4 · #a4194c

#194ca4 · #a41992 · #a47119

Contrast

#19a42b as textRatioAAAA largeAAAFix
Aaon white
3.29:1failpassfail
  • AA: use #148523 as the text (4.76:1)
  • AAA: use #0f661b as the text (7.15:1)
  • AA: or shift the background to #262626 (4.6:1)
Aaon black
6.39:1passpassfail
  • AAA: use #1aad2d as the text (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #19a42b as the background.

Brands using this color

mcpConnect your agent — build around #19a42b
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 #19a42b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/19a42b-a2bea9-ac4edf-1f2d27-ecf1e9?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