Color
#efdc0b
#efdc0brgb(239, 220, 11)hsl(55, 91%, 49%)oklch(0.882 0.184 103.1)Colors that go with #efdc0b
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.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #efdc0b: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Deep Sky Blue #00bfff
split-complementshippedDeep Sky Blue is a split-complement of #efdc0b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Lilac #c8a2c8
complementaryshippedLilac sits directly opposite #efdc0b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Cornflower Blue #6495ed
shippedCornflower Blue is paired with #efdc0b in 4 real palettes, including NBA's brand system and Ahrefs's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Crimson #dc143c
shippedCrimson is paired with #efdc0b in 5 real palettes, including Lay's's brand system and Tequila Sunrise, as the accent — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #efdc0b in 5 real palettes, including Ikea's brand system and FIFA's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Red #ff0000
shippedRed is paired with #efdc0b in 4 real palettes, including Paddle's brand system and Phantom: The money app that'll take you placesLogo PhantomLogo PhantomLogo Phantom's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Steel Blue #4682b4
shippedSteel Blue is paired with #efdc0b in 4 real palettes, including Dollar General's brand system and Lemon Squeezy's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #efdc0b
Tints & shades
Harmonies
Contrast
| #efdc0b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.41:1 | fail | fail | fail | |
Aaon black | 14.91:1 | pass | pass | pass | Passes 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 #efdc0b as the background.
Brands using this color
Fonts for this mood
#efdc0b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
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.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #efdc0b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/efdc0b-bdbea2-4ea0df-282d1f-f1ede9?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md