Harvest
Open in tool →Pumpkin, straw and burnt gold on parchment — the autumn palette that still feels like a product, not a place-mat.
Color
#ac421b
#ac421b
hex
#ac421brgb
rgb(172, 66, 27)hsl
hsl(16, 73%, 39%)oklch
oklch(0.519 0.148 39)Closest name: Rust (#b7410e)Relative luminance 0.1275
Colors that go with #ac421b
Crimson, Sea Green and Teal 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.
Crimson #dc143c
analogousshippedCrimson is #ac421b's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #ac421b — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Teal #008080
complementaryshippedTeal sits directly opposite #ac421b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #ac421b in 4 real palettes, including Ember and Trailhead, as the accent.
Champagne #f7e7ce
shipped5 real palettes, including Woodsmoke and BrandSweets's brand system put Champagne beside #ac421b, as the text colour against it.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #ac421b: 4 real palettes, including Behance's brand system and MLB's brand system, as the supporting colour.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #ac421b in 6 real palettes, including Olive Grove and BrandSweets's brand system, as the lead colour.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #ac421b: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Real palettes that use #ac421b
Tints & shades
Harmonies
Contrast
| #ac421b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.92:1 | pass | pass | fail |
|
Aaon black | 3.55:1 | fail | pass | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ac421b 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
Fonts for this mood
#ac421b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #ac421b
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 #ac421b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/ac421b-c4ab9c-62cbb4-2d291f-f1e9eb?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