Color

#1ff45b

#1ff45b
hex#1ff45b
rgbrgb(31, 244, 91)
hslhsl(137, 91%, 54%)
oklchoklch(0.844 0.248 146.5)
Closest name: Cathode Green (#00ff55)Relative luminance 0.6575

Colors that go with #1ff45b

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 →

#f41fb8

#4df41f · #1ff4c6

#5b1ff4 · #f45b1f

Split-complementary

Open in tool →

#c61ff4 · #f41f4d

#1f4df4 · #f41fb8 · #f4c61f

Contrast

#1ff45b as textRatioAAAA largeAAAFix
Aaon white
1.48:1failfailfail
  • AA: use #06882b as the text (4.6:1)
  • AAA: use #056620 as the text (7.17:1)
  • AA: or shift the background to #5c5c5c (4.51:1)
  • AAA: or shift the background to #3d3d3d (7.32:1)
Aaon black
14.15:1passpasspassPasses 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 #1ff45b 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 #1ff45b
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 #1ff45b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1ff45b-a2bead-bb59d4-1f2d29-ebf1e9?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