Color
#e21818
#e21818rgb(226, 24, 24)hsl(0, 81%, 49%)oklch(0.58 0.228 28.3)Colors that go with #e21818
Charcoal, Royal 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 #e21818: 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 #e21818 — 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 #e21818: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Amber #ffbf00
shippedAmber is paired with #e21818 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 native Cybersecurity's brand system and Doordash's brand system put Blue beside #e21818, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #e21818: 5 real palettes, including Walgreens's brand system and Behance's brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #e21818: 18 real palettes, including Netflix's brand system and McDonald's's brand system, as the accent.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #e21818: 6 real palettes, including Databricks's brand system and Google's brand system, as the accent.
Real palettes that use #e21818
Tints & shades
Harmonies
Contrast
| #e21818 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.8:1 | pass | pass | fail |
|
Aaon black | 4.38:1 | 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 #e21818 as the background.
Brands using this color
- Netflixprimary · #e50914 · Δ0.704
- WWEsecondary · #e40707 · Δ0.777
- Toyotasecondary · #e10a1d · Δ0.887
- Lenovosecondary · #e1251b · Δ0.891
- Nintendosecondary · #e60012 · Δ0.974
- Lay'saccent · #df2027 · Δ1.02
- Formula 1secondary · #e10600 · Δ1.042
- Vodafoneprimary · #e60000 · Δ1.097
- Vodafoneaccent · #e60000 · Δ1.097
- Pinterestprimary · #e40424 · Δ1.301
- Pinterestsecondary · #dd0e0e · Δ1.323
- Codecademyaccent · #dc2626 · Δ1.381
- Pinterestaccent · #e60023 · Δ1.42
- Marvelaccent · #e62429 · Δ1.59
- Gatoradesecondary · #ea0000 · Δ1.614
- LGsecondary · #ea1917 · Δ1.649
- MAC Cosmeticssecondary · #da1717 · Δ1.661
- Pizza Hutsecondary · #e91c24 · Δ1.672
- McDonald'ssecondary · #da291c · Δ1.71
- Wiredsecondary · #eb0000 · Δ1.78
- Twitchaccent · #eb0400 · Δ1.781
- Budweiserprimary · #dc041c · Δ1.795
- KFCprimary · #e4002b · Δ1.879
- KFCsecondary · #e4002b · Δ1.879
- NASCARsecondary · #e4002b · Δ1.879
- Walgreenssecondary · #e62600 · Δ1.897
- Databrickssecondary · #eb1600 · Δ1.942
- native Cybersecuritysecondary · #ec0000 · Δ1.952
- Doordashsecondary · #eb1700 · Δ1.965
Fonts for this mood
#e21818 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 #e21818 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/e21818-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