Color
#cb0123
#cb0123rgb(203, 1, 35)hsl(350, 99%, 40%)oklch(0.531 0.215 24.5)Colors that go with #cb0123
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 #cb0123 — 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 #cb0123 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 #cb0123 in 4 real palettes, including Maple and Ember, as the accent — a combination designers have actually shipped, not a computed rotation.
Blue #0000ff
shippedBlue is paired with #cb0123 in 5 real palettes, including Tim Hortons's brand system and native Cybersecurity's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Dark Olive Green #556b2f
shippedDark Olive Green is paired with #cb0123 in 4 real palettes, including Farmers Market and Olive Grove, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #cb0123 in 11 real palettes, including AT&T's brand system and Nissan's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Gold #ffd700
shippedGold is paired with #cb0123 in 6 real palettes, including Lay's's brand system and Tabloid, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #cb0123: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Real palettes that use #cb0123
Tints & shades
Harmonies
Contrast
| #cb0123 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.89:1 | pass | pass | fail |
|
Aaon black | 3.57:1 | 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 #cb0123 as the background.
Brands using this color
Fonts for this mood
#cb0123 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 #cb0123 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/cb0123-c49c9e-62cb87-2d231f-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