Blueprint
Open in tool →Cyan and indigo on navy is the developer-tool look; amber is the only warm note, so it always reads as 'attention'.
Color
#fcba03
#fcba03
hex
#fcba03rgb
rgb(252, 186, 3)hsl
hsl(44, 98%, 50%)oklch
oklch(0.828 0.17 82.6)Closest name: Amber (#ffbf00)Relative luminance 0.5582
Colors that go with #fcba03
Charcoal, Cornflower Blue and Crimson 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.
Cornflower Blue #6495ed
complementaryshippedCornflower Blue sits directly opposite #fcba03 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Crimson #dc143c
shippedCrimson is paired with #fcba03 in 4 real palettes, including Tabloid and Diner, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Dark Olive Green #556b2f
shippedDark Olive Green is paired with #fcba03 in 4 real palettes, including Farmers Market and Miro's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Deep Sky Blue #00bfff
split-complementshippedDeep Sky Blue is a split-complement of #fcba03: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Dodger Blue #1e90ff
shippedDodger Blue is paired with #fcba03 in 4 real palettes, including Heatwave and PostHog's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Rust #b7410e
shippedRust is paired with #fcba03 in 4 real palettes, including Trailhead and Garnet, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Sage Green #9caf88
shippedSage Green is paired with #fcba03 in 6 real palettes, including Polaroid and Chalkboard, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Tints & shades
Harmonies
Contrast
| #fcba03 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.73:1 | fail | fail | fail | |
Aaon black | 12.16:1 | 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 #fcba03 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
Trailhead
Open in tool →Rust, pine and sun — high-visibility earth tones that read at a distance and on a trail sign.
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.
Heatwave
Open in tool →Blaze orange and hot yellow with one cold blue — the high-noon palette; use the blue where the eye needs to rest.
Fonts for this mood
#fcba03 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #fcba03
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 #fcba03 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/fcba03-c4be9c-62b1cb-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