Gallery
Open in tool →Near-monochrome with one burnt-orange highlight — an art director's default because it never competes with the work.
Color
#c23819
#c23819
hex
#c23819rgb
rgb(194, 56, 25)hsl
hsl(11, 77%, 43%)oklch
oklch(0.544 0.18 33.8)Closest name: Rust (#b7410e)Relative luminance 0.1437
Colors that go with #c23819
Charcoal, Royal Blue and Sea Green 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 #c23819: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Royal Blue #4169e1
triadicshippedRoyal Blue completes a triad with #c23819 — 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 #c23819 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Steel Blue #4682b4
split-complementshippedSteel Blue is a split-complement of #c23819: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Teal #008080
complementaryshippedTeal sits directly opposite #c23819 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 #c23819 in 6 real palettes, including Trailhead and Maple, as the accent.
Blue #0000ff
shipped6 real palettes, including Tim Hortons's brand system and Doordash's brand system put Blue beside #c23819, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #c23819: 5 real palettes, including Behance's brand system and Walgreens's brand system, as the supporting colour.
Real palettes that use #c23819
Tints & shades
Harmonies
Contrast
| #c23819 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.42:1 | pass | pass | fail |
|
Aaon black | 3.87:1 | 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 #c23819 as the background.
Brands using this color
Palettes built around it
Noir Beauty
Open in tool →Black, gold and one deep red — the prestige cosmetics counter: all restraint and a single lipstick.
Trailhead
Open in tool →Rust, pine and sun — high-visibility earth tones that read at a distance and on a trail sign.
Garnet
Open in tool →Garnet, carnelian and citrine on a wine-black — the warm jewel set for spirits, theatre and jewellery itself.
Fonts for this mood
#c23819 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #c23819
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 #c23819 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/c23819-c4a89c-62cbab-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