brandsweets

Color

#ecf53d

#ecf53d
hex#ecf53d
rgbrgb(236, 245, 61)
hslhsl(63, 90%, 60%)
oklchoklch(0.934 0.191 112.5)
Closest name: Banana Bandanna (#f8f739)Relative luminance 0.8347
Vivid
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
ecf53d463df5

#463df5

Analogous

Open in tool →
ecf53df5a23d90f53d

#f5a23d · #90f53d

Triadic

Open in tool →
ecf53d3decf5f53dec

#3decf5 · #f53dec

Split-complementary

Open in tool →
ecf53d3d90f5a23df5

#3d90f5 · #a23df5

Tetradic

Open in tool →
ecf53d3df5a2463df5f53d90

#3df5a2 · #463df5 · #f53d90

Contrast

#ecf53d as textRatioAAAA largeAAAFix
Aaon white
1.19:1failfailfail
  • AA: use #737906 as the text (4.7:1)
  • AAA: use #585c05 as the text (7.12:1)
  • AA: or shift the background to #696969 (4.63:1)
  • AAA: or shift the background to #4d4d4d (7.12:1)
Aaon black
17.69:1passpasspassPasses 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 #ecf53d as the background.

Brands using this color

mcpConnect your agent — build around #ecf53d
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 #ecf53d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ecf53d-b9bea2-4e8ddf-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