brandsweets

Color

#efef48

#efef48
hex#efef48
rgbrgb(239, 239, 72)
hslhsl(60, 84%, 61%)
oklchoklch(0.924 0.179 109.4)
Closest name: Buttercup Glow (#f1f458)Relative luminance 0.8055
Vivid
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
efef484848ef

#4848ef

Analogous

Open in tool →
efef48ef9c489cef48

#ef9c48 · #9cef48

Triadic

Open in tool →
efef4848efefef48ef

#48efef · #ef48ef

Split-complementary

Open in tool →
efef48489cef9c48ef

#489cef · #9c48ef

Tetradic

Open in tool →
efef4848ef9c4848efef489c

#48ef9c · #4848ef · #ef489c

Contrast

#efef48 as textRatioAAAA largeAAAFix
Aaon white
1.23:1failfailfail
  • AA: use #7a7a0b as the text (4.55:1)
  • AAA: use #595908 as the text (7.35:1)
  • AA: or shift the background to #666666 (4.68:1)
  • AAA: or shift the background to #4a4a4a (7.22:1)
Aaon black
17.11:1passpasspassPasses 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 #efef48 as the background.

Brands using this color

mcpConnect your agent — build around #efef48
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 #efef48 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/efef48-bbbea2-4e94df-272d1f-f1ede9?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