Color

#efc015

#efc015
hex#efc015
rgbrgb(239, 192, 21)
hslhsl(47, 87%, 51%)
oklchoklch(0.826 0.166 90.4)
Closest name: Amber (#ffbf00)Relative luminance 0.561

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1544ef

#ef5315 · #b1ef15

#15efc0 · #c015ef

Split-complementary

Open in tool →

#15b1ef · #5315ef

#15ef53 · #1544ef · #ef15b1

Contrast

#efc015 as textRatioAAAA largeAAAFix
Aaon white
1.72:1failfailfail
  • AA: use #8f720a as the text (4.59:1)
  • AAA: use #695407 as the text (7.31:1)
  • AA: or shift the background to #525252 (4.55:1)
  • AAA: or shift the background to #363636 (7.03:1)
Aaon black
12.22:1passpasspassPasses 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 #efc015 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

#efc015 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #efc015
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 #efc015 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/efc015-c4c09c-62abcb-2a2d1f-f1ece9?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