brandsweets

Color

#ecf00f

#ecf00f
hex#ecf00f
rgbrgb(236, 240, 15)
hslhsl(61, 88%, 50%)
oklchoklch(0.921 0.201 111)
Closest name: Banana Bandanna (#f8f739)Relative luminance 0.8019
Vivid
Open in palette toolCheck contrast

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →
ecf00f130ff0

#130ff0

Analogous

Open in tool →
ecf00ff0830f7cf00f

#f0830f · #7cf00f

Triadic

Open in tool →
ecf00f0fecf0f00fec

#0fecf0 · #f00fec

Split-complementary

Open in tool →
ecf00f0f7cf0830ff0

#0f7cf0 · #830ff0

Tetradic

Open in tool →
ecf00f0ff083130ff0f00f7c

#0ff083 · #130ff0 · #f00f7c

Contrast

#ecf00f as textRatioAAAA largeAAAFix
Aaon white
1.23:1failfailfail
  • AA: use #767808 as the text (4.71:1)
  • AAA: use #5a5b06 as the text (7.16:1)
  • AA: or shift the background to #666666 (4.66:1)
  • AAA: or shift the background to #4a4a4a (7.19:1)
Aaon black
17.04:1passpasspassPasses 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 #ecf00f as the background.

Brands using this color

mcpConnect your agent — build around #ecf00f
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

›analyze #ecf00f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ecf00f-babea2-4e92df-272d1f-f1ede9?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