brandsweets

Color

#effa29

#effa29
hex#effa29
rgbrgb(239, 250, 41)
hslhsl(63, 95%, 57%)
oklchoklch(0.946 0.203 113)
Closest name: Banana Flash (#eefe02)Relative luminance 0.8688
Vivid
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
effa293429fa

#3429fa

Analogous

Open in tool →
effa29fa9c2987fa29

#fa9c29 · #87fa29

Triadic

Open in tool →
effa2929effafa29ef

#29effa · #fa29ef

Split-complementary

Open in tool →
effa292987fa9c29fa

#2987fa · #9c29fa

Tetradic

Open in tool →
effa2929fa9c3429fafa2987

#29fa9c · #3429fa · #fa2987

Contrast

#effa29 as textRatioAAAA largeAAAFix
Aaon white
1.14:1failfailfail
  • AA: use #767c03 as the text (4.51:1)
  • AAA: use #555a02 as the text (7.37:1)
  • AA: or shift the background to #6b6b6b (4.66:1)
  • AAA: or shift the background to #4f4f4f (7.17:1)
Aaon black
18.38:1passpasspassPasses 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 #effa29 as the background.

Brands using this color

mcpConnect your agent — build around #effa29
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 #effa29 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/effa29-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