Color

#45f542

#45f542
hex#45f542
rgbrgb(69, 245, 66)
hslhsl(119, 90%, 61%)
oklchoklch(0.85 0.257 142.7)
Closest name: Cathode Green (#00ff55)Relative luminance 0.6696

Colors that go with #45f542

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 →

#f242f5

#9ff542 · #42f599

#4245f5 · #f54245

Split-complementary

Open in tool →

#9942f5 · #f5429f

#429ff5 · #f242f5 · #f59942

Contrast

#45f542 as textRatioAAAA largeAAAFix
Aaon white
1.46:1failfailfail
  • AA: use #098807 as the text (4.63:1)
  • AAA: use #076605 as the text (7.21:1)
  • AA: or shift the background to #5c5c5c (4.58:1)
  • AAA: or shift the background to #404040 (7.11:1)
Aaon black
14.39:1passpasspassPasses 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 #45f542 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 #45f542
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 #45f542 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/45f542-a2bea5-964edf-1f2d25-edf1e9?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