Gallery
Open in tool →Near-monochrome with one burnt-orange highlight — an art director's default because it never competes with the work.
Color
#c33b09
#c33b09
hex
#c33b09rgb
rgb(195, 59, 9)hsl
hsl(16, 91%, 40%)oklch
oklch(0.548 0.18 36.7)Closest name: Bolognese (#bb4400)Relative luminance 0.1475
Colors that go with #c33b09
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 #c33b09: 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 #c33b09 — 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 #c33b09 — 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 #c33b09: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Teal #008080
complementaryshippedTeal sits directly opposite #c33b09 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 #c33b09 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 #c33b09, as the accent.
Champagne #f7e7ce
shipped4 real palettes, including Woodsmoke and BrandSweets's brand system put Champagne beside #c33b09, as the text colour against it.
Real palettes that use #c33b09
Tints & shades
Harmonies
Contrast
| #c33b09 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.32:1 | pass | pass | fail |
|
Aaon black | 3.95:1 | 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 #c33b09 as the background.
Brands using this color
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.
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
#c33b09 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #c33b09
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 #c33b09 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/c33b09-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