Color

#288a05

#288a05
hex#288a05
rgbrgb(40, 138, 5)
hslhsl(104, 93%, 28%)
oklchoklch(0.555 0.177 140.2)
Closest name: Green Bell Pepper (#228800)Relative luminance 0.1864

Colors that go with #288a05

Royal Blue, Charcoal 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 →

#66058a

#6b8a05 · #058a24

#05288a · #8a0528

Split-complementary

Open in tool →

#24058a · #8a056b

#056b8a · #66058a · #8a2405

Contrast

#288a05 as textRatioAAAA largeAAAFix
Aaon white
4.44:1failpassfail
  • AA: use #278505 as the text (4.73:1)
  • AAA: use #1e6704 as the text (7.01:1)
  • AA: or shift the background to #080808 (4.51:1)
Aaon black
4.73:1passpassfail
  • AAA: use #33ac06 as the text (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #288a05 as the background.

Brands using this color

Fonts for this mood

#288a05 reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #288a05
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 #288a05 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/288a05-a6bea2-724edf-1f2d22-eff1e9?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