Color

#c4b403

#c4b403
hex#c4b403
rgbrgb(196, 180, 3)
hslhsl(55, 97%, 39%)
oklchoklch(0.76 0.159 103)
Closest name: Celery (#b4c04c)Relative luminance 0.4438

Colors that go with #c4b403

Charcoal, Deep Sky Blue and Lilac 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 →

#0313c4

#c45303 · #74c403

#03c4b4 · #b403c4

Split-complementary

Open in tool →

#0374c4 · #5303c4

#03c453 · #0313c4 · #c40374

Contrast

#c4b403 as textRatioAAAA largeAAAFix
Aaon white
2.13:1failfailfail
  • AA: use #837802 as the text (4.51:1)
  • AAA: use #5f5801 as the text (7.28:1)
  • AA: or shift the background to #454545 (4.51:1)
  • AAA: or shift the background to #262626 (7.12:1)
Aaon black
9.88:1passpasspassPasses 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 #c4b403 as the background.

Brands using this color

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

Fonts for this mood

#c4b403 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #c4b403
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 #c4b403 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c4b403-bdbea2-4ea0df-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