brandsweets

Color

#eff448

#eff448
hex#eff448
rgbrgb(239, 244, 72)
hslhsl(62, 89%, 62%)
oklchoklch(0.934 0.184 111.1)
Closest name: Buttercup Glow (#f1f458)Relative luminance 0.8352
Vivid
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
eff4484e48f4

#4e48f4

Analogous

Open in tool →
eff448f4a44898f448

#f4a448 · #98f448

Triadic

Open in tool →
eff44848eff4f448ef

#48eff4 · #f448ef

Split-complementary

Open in tool →
eff4484898f4a448f4

#4898f4 · #a448f4

Tetradic

Open in tool →
eff44848f4a44e48f4f44898

#48f4a4 · #4e48f4 · #f44898

Contrast

#eff448 as textRatioAAAA largeAAAFix
Aaon white
1.19:1failfailfail
  • AA: use #757807 as the text (4.72:1)
  • AAA: use #595c05 as the text (7.1:1)
  • AA: or shift the background to #696969 (4.63:1)
  • AAA: or shift the background to #4d4d4d (7.13:1)
Aaon black
17.7:1passpasspassPasses 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 #eff448 as the background.

Brands using this color

mcpConnect your agent — build around #eff448
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 #eff448 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/eff448-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