brandsweets

Color

#ecf000

#ecf000
hex#ecf000
rgbrgb(236, 240, 0)
hslhsl(61, 100%, 47%)
oklchoklch(0.921 0.202 111)
Closest name: Banana Bandanna (#f8f739)Relative luminance 0.8015
Vivid
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
ecf0000400f0

#0400f0

Analogous

Open in tool →
ecf000f07c0074f000

#f07c00 · #74f000

Triadic

Open in tool →
ecf00000ecf0f000ec

#00ecf0 · #f000ec

Split-complementary

Open in tool →
ecf0000074f07c00f0

#0074f0 · #7c00f0

Tetradic

Open in tool →
ecf00000f07c0400f0f00074

#00f07c · #0400f0 · #f00074

Contrast

#ecf000 as textRatioAAAA largeAAAFix
Aaon white
1.23:1failfailfail
  • AA: use #787a00 as the text (4.58:1)
  • AAA: use #5a5c00 as the text (7.08:1)
  • AA: or shift the background to #666666 (4.66:1)
  • AAA: or shift the background to #4a4a4a (7.19:1)
Aaon black
17.03:1passpasspassPasses 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 #ecf000 as the background.

Brands using this color

mcpConnect your agent — build around #ecf000
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 #ecf000 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ecf000-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