Color

#40f758

#40f758
hex#40f758
rgbrgb(64, 247, 88)
hslhsl(128, 92%, 61%)
oklchoklch(0.856 0.247 144.8)
Closest name: Cathode Green (#00ff55)Relative luminance 0.6832

Colors that go with #40f758

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 →

#f740df

#83f740 · #40f7b4

#5840f7 · #f75840

Split-complementary

Open in tool →

#b440f7 · #f74083

#4083f7 · #f740df · #f7b440

Contrast

#40f758 as textRatioAAAA largeAAAFix
Aaon white
1.43:1failfailfail
  • AA: use #068917 as the text (4.57:1)
  • AAA: use #046711 as the text (7.11:1)
  • AA: or shift the background to #5e5e5e (4.53:1)
  • AAA: or shift the background to #424242 (7.02:1)
Aaon black
14.66:1passpasspassPasses 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 #40f758 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 #40f758
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 #40f758 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40f758-a2bea9-ac4edf-1f2d27-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