brandsweets

Color

#efef0b

#efef0b
hex#efef0b
rgbrgb(239, 239, 11)
hslhsl(60, 91%, 49%)
oklchoklch(0.922 0.2 109.8)
Closest name: Banana Bombshell (#f7e82e)Relative luminance 0.8011
Vivid
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
efef0b0b0bef

#0b0bef

Analogous

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efef0bef7d0b7def0b

#ef7d0b · #7def0b

Triadic

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efef0b0befefef0bef

#0befef · #ef0bef

Split-complementary

Open in tool →
efef0b0b7def7d0bef

#0b7def · #7d0bef

Tetradic

Open in tool →
efef0b0bef7d0b0befef0b7d

#0bef7d · #0b0bef · #ef0b7d

Contrast

#efef0b as textRatioAAAA largeAAAFix
Aaon white
1.23:1failfailfail
  • AA: use #7a7a06 as the text (4.55:1)
  • AAA: use #585804 as the text (7.47:1)
  • AA: or shift the background to #666666 (4.65:1)
  • AAA: or shift the background to #4a4a4a (7.18:1)
Aaon black
17.02:1passpasspassPasses 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 #efef0b as the background.

Brands using this color

mcpConnect your agent — build around #efef0b
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 #efef0b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/efef0b-bbbea2-4e94df-272d1f-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