Color

#efde1f

#efde1f
hex#efde1f
rgbrgb(239, 222, 31)
hslhsl(55, 87%, 53%)
oklchoklch(0.887 0.182 103.7)
Closest name: Angel’s Trumpet (#f6dd34)Relative luminance 0.7069

Colors that go with #efde1f

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 →

#1f30ef

#ef761f · #99ef1f

#1fefde · #de1fef

Split-complementary

Open in tool →

#1f99ef · #761fef

#1fef76 · #1f30ef · #ef1f99

Contrast

#efde1f as textRatioAAAA largeAAAFix
Aaon white
1.39:1failfailfail
  • AA: use #817709 as the text (4.59:1)
  • AAA: use #5f5807 as the text (7.28:1)
  • AA: or shift the background to #5e5e5e (4.67:1)
  • AAA: or shift the background to #424242 (7.24:1)
Aaon black
15.14:1passpasspassPasses 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 #efde1f as the background.

Brands using this color

Fonts for this mood

#efde1f reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #efde1f
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 #efde1f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/efde1f-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