Color

#bcc421

#bcc421
hex#bcc421
rgbrgb(188, 196, 33)
hslhsl(63, 71%, 45%)
oklchoklch(0.788 0.168 112.7)
Closest name: Celery (#b4c04c)Relative luminance 0.5028

Colors that go with #bcc421

Cornflower Blue, Deep Sky 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 →

#2921c4

#c47b21 · #6bc421

#21bcc4 · #c421bc

Split-complementary

Open in tool →

#216bc4 · #7b21c4

#21c47b · #2921c4 · #c4216b

Contrast

#bcc421 as textRatioAAAA largeAAAFix
Aaon white
1.9:1failfailfail
  • AA: use #757a15 as the text (4.61:1)
  • AAA: use #585c10 as the text (7.11:1)
  • AA: or shift the background to #4a4a4a (4.67:1)
  • AAA: or shift the background to #2e2e2e (7.15:1)
Aaon black
11.06:1passpasspassPasses 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 #bcc421 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 #bcc421
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 #bcc421 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bcc421-b9bea2-4e8ddf-262d1f-f1eee9?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