brandsweets

Color

#e4f641

#e4f641
hex#e4f641
rgbrgb(228, 246, 65)
hslhsl(66, 91%, 61%)
oklchoklch(0.93 0.192 115.3)
Closest name: Buttercup Glow (#f1f458)Relative luminance 0.8279
Vivid
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
e4f6415341f6

#5341f6

Analogous

Open in tool →
e4f641f6ae4189f641

#f6ae41 · #89f641

Triadic

Open in tool →
e4f64141e4f6f641e4

#41e4f6 · #f641e4

Split-complementary

Open in tool →
e4f6414189f6ae41f6

#4189f6 · #ae41f6

Tetradic

Open in tool →
e4f64141f6ae5341f6f64189

#41f6ae · #5341f6 · #f64189

Contrast

#e4f641 as textRatioAAAA largeAAAFix
Aaon white
1.2:1failfailfail
  • AA: use #6e7a06 as the text (4.72:1)
  • AAA: use #545d04 as the text (7.13:1)
  • AA: or shift the background to #696969 (4.59:1)
  • AAA: or shift the background to #4d4d4d (7.07:1)
Aaon black
17.56:1passpasspassPasses 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 #e4f641 as the background.

Brands using this color

mcpConnect your agent — build around #e4f641
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 #e4f641 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/e4f641-b8bea2-4e86df-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