Color

#fbe55b

#fbe55b
hex#fbe55b
rgbrgb(251, 229, 91)
hslhsl(52, 95%, 67%)
oklchoklch(0.915 0.156 100.2)
Closest name: Mustard Yellow (#ffdb58)Relative luminance 0.773

Colors that go with #fbe55b

Charcoal, Lilac and Blue 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 →

#5b70fb

#fb965b · #c0fb5b

#5bfbe5 · #e55bfb

Split-complementary

Open in tool →

#5bc0fb · #965bfb

#5bfb96 · #5b70fb · #fb5bc0

Contrast

#fbe55b as textRatioAAAA largeAAAFix
Aaon white
1.28:1failfailfail
  • AA: use #867503 as the text (4.61:1)
  • AAA: use #635703 as the text (7.25:1)
  • AA: or shift the background to #666666 (4.5:1)
  • AAA: or shift the background to #474747 (7.28:1)
Aaon black
16.46:1passpasspassPasses 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 #fbe55b as the background.

Brands using this color

Fonts for this mood

#fbe55b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #fbe55b
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 #fbe55b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/fbe55b-c4c39c-4ea7df-292d1f-f1ece9?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