brandsweets

Color

#ffff4d

#ffff4d
hex#ffff4d
rgbrgb(255, 255, 77)
hslhsl(60, 100%, 65%)
oklchoklch(0.97 0.188 109.4)
Closest name: Biohazard Suit (#fbfb4c)Relative luminance 0.9332
Vivid
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
ffff4d4d4dff

#4d4dff

Analogous

Open in tool →
ffff4dffa64da6ff4d

#ffa64d · #a6ff4d

Triadic

Open in tool →
ffff4d4dffffff4dff

#4dffff · #ff4dff

Split-complementary

Open in tool →
ffff4d4da6ffa64dff

#4da6ff · #a64dff

Tetradic

Open in tool →
ffff4d4dffa64d4dffff4da6

#4dffa6 · #4d4dff · #ff4da6

Contrast

#ffff4d as textRatioAAAA largeAAAFix
Aaon white
1.07:1failfailfail
  • AA: use #7a7a00 as the text (4.55:1)
  • AAA: use #5c5c00 as the text (7.03:1)
  • AA: or shift the background to #707070 (4.64:1)
  • AAA: or shift the background to #545454 (7.09:1)
Aaon black
19.66:1passpasspassPasses 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 #ffff4d as the background.

Brands using this color

mcpConnect your agent — build around #ffff4d
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 #ffff4d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ffff4d-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