Color
#ef5243
#ef5243rgb(239, 82, 67)hsl(5, 84%, 60%)oklch(0.651 0.196 29)Colors that go with #ef5243
Cadet Blue, Charcoal 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.
Cadet Blue #5f9ea0
complementaryshippedCadet Blue sits directly opposite #ef5243 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #ef5243: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Amber #ffbf00
shippedAmber is paired with #ef5243 in 6 real palettes, including Ember and Heatwave, as the accent — a combination designers have actually shipped, not a computed rotation.
Blue #0000ff
shippedBlue is paired with #ef5243 in 9 real palettes, including Monzo's brand system and Glossier's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #ef5243 in 10 real palettes, including PlanetScale's brand system and Postman's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Dodger Blue #1e90ff
shippedDodger Blue is paired with #ef5243 in 7 real palettes, including Figma's brand system and Replit's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Firebrick #b22222
shippedFirebrick is paired with #ef5243 in 4 real palettes, including Ember and Nintendo's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Gold #ffd700
shippedGold is paired with #ef5243 in 8 real palettes, including Streetwear and Tequila Sunrise, as the accent — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #ef5243
Tints & shades
Harmonies
Contrast
| #ef5243 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.52:1 | fail | pass | fail | |
Aaon black | 5.96:1 | 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 #ef5243 as the background.
Brands using this color
Fonts for this mood
#ef5243 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 #ef5243 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/ef5243-c4a49c-62cba1-2d261f-f1e9ec?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