Color
#0d0303
#0d0303rgb(13, 3, 3)hsl(0, 63%, 3%)oklch(0.119 0.024 21.3)Colors that go with #0d0303
Charcoal, Amber and Blue 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 text near-black that reads cleanly against #0d0303 without the hard edge of pure #000.
Amber #ffbf00
shippedAmber is paired with #0d0303 in 14 real palettes, including Ember and Ahrefs's brand system, as the accent.
Blue #0000ff
shipped16 real palettes, including Glossier's brand system and Uber's brand system put Blue beside #0d0303, as the accent.
Blue Violet #8a2be2
shippedBlue Violet is paired with #0d0303 in 9 real palettes, including Circuit and Render's brand system, as the lead colour.
Brown #a52a2a
shipped4 real palettes, including Velvet and Garnet put Brown beside #0d0303, as the lead colour.
Champagne #f7e7ce
shipped6 real palettes, including Midnight Luxe and Sweetgreen's brand system put Champagne beside #0d0303, as the text colour against it.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #0d0303: 13 real palettes, including Oreo's brand system and Behance's brand system, as the lead colour.
Copper #b87333
shippedDesigners have shipped Copper with #0d0303: 4 real palettes, including Chipotle's brand system and Atelier, as the accent.
Real palettes that use #0d0303
Tints & shades
Harmonies
Contrast
| #0d0303 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 20.36:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.03:1 | 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 #0d0303 as the background.
Brands using this color
Fonts for this mood
#0d0303 reads as warm, vivid, dark. 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 #0d0303 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/0d0303-c4a19c-62cb98-2d251f-f1e9ed?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