Color

#ffef0a

#ffef0a
hex#ffef0a
rgbrgb(255, 239, 10)
hslhsl(56, 100%, 52%)
oklchoklch(0.935 0.197 104.6)
Closest name: Banana Bandanna (#f8f739)Relative luminance 0.8301

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0a1bff

#ff740a · #95ff0a

#0affef · #ef0aff

Split-complementary

Open in tool →

#0a95ff · #740aff

#0aff74 · #0a1bff · #ff0a95

Contrast

#ffef0a as textRatioAAAA largeAAAFix
Aaon white
1.19:1failfailfail
  • AA: use #807700 as the text (4.61:1)
  • AAA: use #615a00 as the text (7.07:1)
  • AA: or shift the background to #696969 (4.6:1)
  • AAA: or shift the background to #4d4d4d (7.09:1)
Aaon black
17.6:1passpasspassPasses 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 #ffef0a as the background.

Brands using this color

Fonts for this mood

#ffef0a reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ffef0a
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 #ffef0a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ffef0a-bdbea2-4e9edf-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