brandsweets

Color

#ecf240

#ecf240
hex#ecf240
rgbrgb(236, 242, 64)
hslhsl(62, 87%, 60%)
oklchoklch(0.927 0.187 111.5)
Closest name: Buttercup Glow (#f1f458)Relative luminance 0.8171
Vivid
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
ecf2404640f2

#4640f2

Analogous

Open in tool →
ecf240f29f4093f240

#f29f40 · #93f240

Triadic

Open in tool →
ecf24040ecf2f240ec

#40ecf2 · #f240ec

Split-complementary

Open in tool →
ecf2404093f29f40f2

#4093f2 · #9f40f2

Tetradic

Open in tool →
ecf24040f29f4640f2f24093

#40f29f · #4640f2 · #f24093

Contrast

#ecf240 as textRatioAAAA largeAAAFix
Aaon white
1.21:1failfailfail
  • AA: use #747708 as the text (4.79:1)
  • AAA: use #585b06 as the text (7.21:1)
  • AA: or shift the background to #696969 (4.53:1)
  • AAA: or shift the background to #4a4a4a (7.32:1)
Aaon black
17.34:1passpasspassPasses 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 #ecf240 as the background.

Brands using this color

mcpConnect your agent — build around #ecf240
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 #ecf240 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ecf240-babea2-4e8fdf-272d1f-f1eee9?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