Tabloid
Open in tool →Red, black and yellow on white is the loudest three-color system in print — use it when headlines are the product.
Color
#e0243d
#e0243d
hex
#e0243drgb
rgb(224, 36, 61)hsl
hsl(352, 75%, 51%)oklch
oklch(0.586 0.218 21.5)Closest name: crimson (#dc143c)Relative luminance 0.1745
Colors that go with #e0243d
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 #e0243d: 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 #e0243d — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Sea Green #2e8b57
split-complementshippedSea Green is a split-complement of #e0243d: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Steel Blue #4682b4
split-complementshippedSteel Blue is a split-complement of #e0243d: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Amber #ffbf00
shippedAmber is paired with #e0243d in 7 real palettes, including McDonald's's brand system and Wired's brand system, as the lead colour.
Blue #0000ff
shipped8 real palettes, including Tim Hortons's brand system and native Cybersecurity's brand system put Blue beside #e0243d, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #e0243d: 5 real palettes, including Walgreens's brand system and Behance's brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #e0243d: 18 real palettes, including Costco's brand system and Target : Expect More. Pay Less.'s brand system, as the supporting colour.
Real palettes that use #e0243d
Tints & shades
Harmonies
Contrast
| #e0243d as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.68:1 | pass | pass | fail |
|
Aaon black | 4.49:1 | 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 #e0243d as the background.
Brands using this color
Palettes built around it
Gemstone
Open in tool →Emerald, amethyst and ruby on velvet-black — the jewel-tone trio; the surface must be dark or the stones go plastic.
Fonts for this mood
#e0243d reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #e0243d
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 #e0243d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/e0243d-c49c9d-62cb8a-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