CSS color
red
#ff0000rgb(255, 0, 0)hsl(0, 100%, 50%)oklch(0.628 0.258 29.2)Red on this page is the real value, not a screenshot: exact hex, RGB, HSL and OKLCH, ten tints and ten shades, classic harmonies, and WCAG contrast with fixes — plus the 9 public brands that use it and the palettes it appears in.
Colors that go with red
Charcoal, Dodger Blue and Steel 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 body-text near-black for red: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Dodger Blue #1e90ff
triadicshippedDodger Blue completes a triad with red — 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 red: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Cadet Blue #5f9ea0
complementaryshippedCadet Blue sits directly opposite red 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 red in 6 real palettes, including Wired's brand system and Google's brand system, as the accent.
Blue #0000ff
shipped7 real palettes, including Gap's brand system and native Cybersecurity's brand system put Blue beside red, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with red: 4 real palettes, including NASA's brand system and Walgreens's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with red: 15 real palettes, including L'Oréal's brand system and YouTube's brand system, as the accent.
Real palettes that use red
Tints & shades
Harmonies
Contrast
| red as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4:1 | fail | pass | fail | |
Aaon black | 5.25:1 | pass | 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 red as the background.
Brands using this color
Fonts for this mood
red 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 #ff0000 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/ff0000-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