Ember
Open in tool →Flame orange on charcoal — the sports and energy palette; one accent yellow for stats and highlights.
Color
#ac381b
#ac381b
hex
#ac381brgb
rgb(172, 56, 27)hsl
hsl(12, 73%, 39%)oklch
oklch(0.506 0.157 34.8)Closest name: Brick (#a03623)Relative luminance 0.1168
Colors that go with #ac381b
Royal Blue, 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.
Royal Blue #4169e1
triadicshippedRoyal Blue completes a triad with #ac381b — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #ac381b — 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 #ac381b 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 #ac381b in 4 real palettes, including Ember and Maple, as the accent.
Champagne #f7e7ce
shipped6 real palettes, including Woodsmoke and BrandSweets's brand system put Champagne beside #ac381b, as the text colour against it.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #ac381b: 4 real palettes, including Behance's brand system and MLB's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #ac381b in 10 real palettes, including Wendy's's brand system and Vodafone's brand system, as the lead colour.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #ac381b: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Real palettes that use #ac381b
Tints & shades
Harmonies
Contrast
| #ac381b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.3:1 | pass | pass | fail |
|
Aaon black | 3.34:1 | 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 #ac381b as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#ac381b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #ac381b
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 #ac381b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/ac381b-c4a99c-62cbad-2d281f-f1e9ec?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