brandsweets

Color

#ecfb41

#ecfb41
hex#ecfb41
rgbrgb(236, 251, 65)
hslhsl(65, 96%, 62%)
oklchoklch(0.946 0.195 114.2)
Closest name: Banana Bandanna (#f8f739)Relative luminance 0.8721
Vivid
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
ecfb415141fb

#5141fb

Analogous

Open in tool →
ecfb41fbae418ffb41

#fbae41 · #8ffb41

Triadic

Open in tool →
ecfb4141ecfbfb41ec

#41ecfb · #fb41ec

Split-complementary

Open in tool →
ecfb41418ffbae41fb

#418ffb · #ae41fb

Tetradic

Open in tool →
ecfb4141fbae5141fbfb418f

#41fbae · #5141fb · #fb418f

Contrast

#ecfb41 as textRatioAAAA largeAAAFix
Aaon white
1.14:1failfailfail
  • AA: use #737d03 as the text (4.5:1)
  • AAA: use #535a02 as the text (7.42:1)
  • AA: or shift the background to #6b6b6b (4.68:1)
  • AAA: or shift the background to #4f4f4f (7.19:1)
Aaon black
18.44:1passpasspassPasses 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 #ecfb41 as the background.

Brands using this color

mcpConnect your agent — build around #ecfb41
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 #ecfb41 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ecfb41-b8bea2-4e88df-262d1f-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