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
#fcb603
#fcb603
hex
#fcb603rgb
rgb(252, 182, 3)hsl
hsl(43, 98%, 50%)oklch
oklch(0.82 0.169 80.6)Closest name: Amber (#ffbf00)Relative luminance 0.5416
Colors that go with #fcb603
Charcoal, Deep Sky Blue and Cornflower 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 #fcb603: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Deep Sky Blue #00bfff
complementaryshippedDeep Sky Blue sits directly opposite #fcb603 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 #fcb603 in 6 real palettes, including Mastodon hosted on mastodon.social's brand system and Blueprint, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Crimson #dc143c
shippedCrimson is paired with #fcb603 in 5 real palettes, including Tabloid and Tequila Sunrise, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Dark Olive Green #556b2f
shippedDark Olive Green is paired with #fcb603 in 4 real palettes, including Farmers Market and Undergrowth, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #fcb603 in 8 real palettes, including Wikipedia's brand system and Warner Bros.'s brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Dodger Blue #1e90ff
shippedDodger Blue is paired with #fcb603 in 5 real palettes, including Heatwave and PostHog's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Midnight Blue #191970
shippedMidnight Blue is paired with #fcb603 in 4 real palettes, including Open House and FIFA's brand system, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #fcb603
Tints & shades
Harmonies
Contrast
| #fcb603 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.77:1 | fail | fail | fail | |
Aaon black | 11.83:1 | 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 #fcb603 as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#fcb603 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #fcb603
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 #fcb603 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/fcb603-c4bd9c-62b2cb-2b2d1f-f1ebe9?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