Color

#3af259

#3af259
hex#3af259
rgbrgb(58, 242, 89)
hslhsl(130, 88%, 59%)
oklchoklch(0.842 0.243 145.3)
Closest name: Becquerel (#4bec13)Relative luminance 0.6513

Colors that go with #3af259

Violet, Deep Sky Blue 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 →

#f23ad4

#78f23a · #3af2b5

#593af2 · #f2593a

Split-complementary

Open in tool →

#b53af2 · #f23a78

#3a78f2 · #f23ad4 · #f2b53a

Contrast

#3af259 as textRatioAAAA largeAAAFix
Aaon white
1.5:1failfailfail
  • AA: use #09861e as the text (4.73:1)
  • AAA: use #066516 as the text (7.29:1)
  • AA: or shift the background to #595959 (4.68:1)
  • AAA: or shift the background to #3d3d3d (7.25:1)
Aaon black
14.03:1passpasspassPasses 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 #3af259 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 #3af259
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 #3af259 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3af259-a2beaa-b14edf-1f2d28-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