Color
#a81530
#a81530rgb(168, 21, 48)hsl(349, 78%, 37%)oklch(0.472 0.177 19.3)Colors that go with #a81530
Royal Blue, Teal and Amber 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.
Royal Blue #4169e1
triadicshippedRoyal Blue completes a triad with #a81530 — 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 #a81530 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 #a81530 in 4 real palettes, including Ember and Maple, as the accent.
Crimson #dc143c
shippedCrimson is paired with #a81530 in 7 real palettes, including Wendy's's brand system and State Farm's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #a81530: 9 real palettes, including State Farm's brand system and Campbell's's brand system, as the accent.
Goldenrod #daa520
shippedGoldenrod shows up next to #a81530 in 4 real palettes, including Fireside and Noir Beauty, as the accent.
Sienna #a0522d
analogousshippedSienna is #a81530's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #a81530: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Real palettes that use #a81530
Tints & shades
Harmonies
Contrast
| #a81530 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 7.46:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.81:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a81530 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#a81530 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 #a81530 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/a81530-c49c9f-62cb85-2d231f-f1e9ee?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