Color

#fdf51c

#fdf51c
hex#fdf51c
rgbrgb(253, 245, 28)
hslhsl(58, 98%, 55%)
oklchoklch(0.946 0.199 107.2)
Closest name: Banana Bandanna (#f8f739)Relative luminance 0.8627

Colors that go with #fdf51c

Lilac, Blue 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1c23fd

#fd851c · #94fd1c

#1cfdf5 · #f51cfd

Split-complementary

Open in tool →

#1c94fd · #851cfd

#1cfd85 · #1c23fd · #fd1c94

Contrast

#fdf51c as textRatioAAAA largeAAAFix
Aaon white
1.15:1failfailfail
  • AA: use #797501 as the text (4.82:1)
  • AAA: use #5b5801 as the text (7.39:1)
  • AA: or shift the background to #6b6b6b (4.63:1)
  • AAA: or shift the background to #4f4f4f (7.12:1)
Aaon black
18.25:1passpasspassPasses 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 #fdf51c as the background.

Brands using this color

Fonts for this mood

#fdf51c reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #fdf51c
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 #fdf51c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/fdf51c-bcbea2-4e99df-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