Color

#ffff0a

#ffff0a
hex#ffff0a
rgbrgb(255, 255, 10)
hslhsl(60, 100%, 52%)
oklchoklch(0.968 0.21 109.8)
Closest name: yellow (#ffff00)Relative luminance 0.928

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0a0aff

#ff850a · #85ff0a

#0affff · #ff0aff

Split-complementary

Open in tool →

#0a85ff · #850aff

#0aff85 · #0a0aff · #ff0a85

Contrast

#ffff0a as textRatioAAAA largeAAAFix
Aaon white
1.07:1failfailfail
  • AA: use #7a7a00 as the text (4.55:1)
  • AAA: use #5c5c00 as the text (7.03:1)
  • AA: or shift the background to #707070 (4.61:1)
  • AAA: or shift the background to #545454 (7.05:1)
Aaon black
19.56:1passpasspassPasses 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 #ffff0a as the background.

Brands using this color

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

mcpConnect your agent — build around #ffff0a
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 #ffff0a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ffff0a-bbbea2-4e94df-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