Color

#fbff1f

#fbff1f
hex#fbff1f
rgbrgb(251, 255, 31)
hslhsl(61, 100%, 56%)
oklchoklch(0.965 0.208 110.9)
Closest name: Bat-Signal (#feff00)Relative luminance 0.9213

Colors that go with #fbff1f

Violet, Lilac and Charcoal lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Real palettes that use #fbff1f

Tints & shades

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

Harmonies

Complementary

Open in tool →

#221fff

#ff931f · #8bff1f

#1ffbff · #ff1ffb

Split-complementary

Open in tool →

#1f8bff · #931fff

#1fff93 · #221fff · #ff1f8b

Contrast

#fbff1f as textRatioAAAA largeAAAFix
Aaon white
1.08:1failfailfail
  • AA: use #787a00 as the text (4.58:1)
  • AAA: use #5a5c00 as the text (7.08:1)
  • AA: or shift the background to #707070 (4.58:1)
  • AAA: or shift the background to #545454 (7:1)
Aaon black
19.43:1passpasspassPasses 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 #fbff1f as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

mcpConnect your agent — build around #fbff1f
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #fbff1f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/fbff1f-babea2-4e92df-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