Maple
Open in tool →The three colours a maple goes through in October, on a warm white — loud, seasonal, and readable because the type is near-black.
Color
#efbb01
#efbb01
hex
#efbb01rgb
rgb(239, 187, 1)hsl
hsl(47, 99%, 47%)oklch
oklch(0.816 0.167 88.3)Closest name: Baklava (#efb435)Relative luminance 0.5389
Colors that go with #efbb01
Charcoal, Cornflower Blue and Deep Sky Blue 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 #efbb01: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Cornflower Blue #6495ed
complementaryshippedCornflower Blue sits directly opposite #efbb01 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Deep Sky Blue #00bfff
split-complementshippedDeep Sky Blue is a split-complement of #efbb01: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Champagne #f7e7ce
shipped4 real palettes, including Midnight Luxe and Coffee Bar put Champagne beside #efbb01, as that palette's text colour.
Crimson #dc143c
shippedCrimson is paired with #efbb01 in 7 real palettes, including McDonald's's brand system and Tabloid, as the supporting colour.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #efbb01 in 4 real palettes, including Farmers Market and Miro's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #efbb01: 11 real palettes, including Wikipedia's brand system and Warner Bros.'s brand system, as the supporting colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #efbb01: 7 real palettes, including Google's brand system and Heatwave, as the lead colour.
Real palettes that use #efbb01
Tints & shades
Harmonies
Contrast
| #efbb01 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.78:1 | fail | fail | fail | |
Aaon black | 11.78:1 | 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 #efbb01 as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#efbb01 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #efbb01
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #efbb01 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/efbb01-c4c09c-62abcb-2a2d1f-f1ece9?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