Color

#28ea1a

#28ea1a
hex#28ea1a
rgbrgb(40, 234, 26)
hslhsl(116, 83%, 51%)
oklchoklch(0.815 0.268 142.2)
Closest name: Becquerel (#4bec13)Relative luminance 0.5937

Colors that go with #28ea1a

Deep Sky Blue, 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 →

#dc1aea

#90ea1a · #1aea74

#1a28ea · #ea1a28

Split-complementary

Open in tool →

#741aea · #ea1a90

#1a90ea · #dc1aea · #ea741a

Contrast

#28ea1a as textRatioAAAA largeAAAFix
Aaon white
1.63:1failfailfail
  • AA: use #15870d as the text (4.66:1)
  • AAA: use #10670a as the text (7.08:1)
  • AA: or shift the background to #545454 (4.64:1)
  • AAA: or shift the background to #383838 (7.19:1)
Aaon black
12.87:1passpasspassPasses 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 #28ea1a 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 #28ea1a
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 #28ea1a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28ea1a-a2bea3-8f4edf-1f2d24-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