Color

#28a438

#28a438
hex#28a438
rgbrgb(40, 164, 56)
hslhsl(128, 61%, 40%)
oklchoklch(0.63 0.182 144.8)
Closest name: Fennel Fiasco (#00aa44)Relative luminance 0.2729

Colors that go with #28a438

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 →

#a42894

#55a428 · #28a477

#3828a4 · #a43828

Split-complementary

Open in tool →

#7728a4 · #a42855

#2855a4 · #a42894 · #a47728

Contrast

#28a438 as textRatioAAAA largeAAAFix
Aaon white
3.25:1failpassfail
  • AA: use #21872f as the text (4.59:1)
  • AAA: use #186322 as the text (7.38:1)
  • AA: or shift the background to #262626 (4.65:1)
Aaon black
6.46:1passpassfail
  • AAA: use #2aac3b 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 #28a438 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

mcpConnect your agent — build around #28a438
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 #28a438 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28a438-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