Color

#fbf251

#fbf251
hex#fbf251
rgbrgb(251, 242, 81)
hslhsl(57, 96%, 65%)
oklchoklch(0.941 0.174 106.1)
Closest name: Buttercup Glow (#f1f458)Relative luminance 0.8461

Colors that go with #fbf251

Lilac, Charcoal and Crimson 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#5059fb

#fb9d50 · #aefb50

#50fbf3 · #f350fb

Split-complementary

Open in tool →

#50aefb · #9d50fb

#50fb9d · #5059fb · #fb50ae

Contrast

#fbf251 as textRatioAAAA largeAAAFix
Aaon white
1.17:1failfailfail
  • AA: use #7d7703 as the text (4.65:1)
  • AAA: use #5f5a02 as the text (7.12:1)
  • AA: or shift the background to #6b6b6b (4.55:1)
  • AAA: or shift the background to #4d4d4d (7.21:1)
Aaon black
17.92:1passpasspassPasses 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 #fbf251 as the background.

Brands using this color

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

Fonts for this mood

#fbf251 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #fbf251
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 #fbf251 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/fbf251-bcbea2-4e9bdf-282d1f-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