Color

#efe306

#efe306
hex#efe306
rgbrgb(239, 227, 6)
hslhsl(57, 95%, 48%)
oklchoklch(0.897 0.19 105.7)
Closest name: Banana Bombshell (#f7e82e)Relative luminance 0.733

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0612ef

#ef6f06 · #86ef06

#06efe3 · #e306ef

Split-complementary

Open in tool →

#0686ef · #6f06ef

#06ef6f · #0612ef · #ef0686

Contrast

#efe306 as textRatioAAAA largeAAAFix
Aaon white
1.34:1failfailfail
  • AA: use #7c7603 as the text (4.72:1)
  • AAA: use #5e5a02 as the text (7.14:1)
  • AA: or shift the background to #616161 (4.62:1)
  • AAA: or shift the background to #454545 (7.15:1)
Aaon black
15.66:1passpasspassPasses 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 #efe306 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

#efe306 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #efe306
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 #efe306 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/efe306-bcbea2-4e9bdf-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