Color
#f34f39
#f34f39rgb(243, 79, 57)hsl(7, 89%, 59%)oklch(0.653 0.204 30.8)Colors that go with #f34f39
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 #f34f39 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 #f34f39: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Amber #ffbf00
shippedAmber is paired with #f34f39 in 8 real palettes, including Google's brand system and Heatwave, as the accent.
Blue #0000ff
shipped8 real palettes, including Monzo's brand system and Glossier's brand system put Blue beside #f34f39, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #f34f39: 5 real palettes, including NASA's brand system and Tide's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #f34f39: 15 real palettes, including PlanetScale's brand system and Strava's brand system, as the accent.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #f34f39: 8 real palettes, including Figma's brand system and Google's brand system, as the accent.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #f34f39: 8 real palettes, including Ember and 3M's brand system, as the supporting colour.
Real palettes that use #f34f39
Tints & shades
Harmonies
Contrast
| #f34f39 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.51:1 | fail | pass | fail | |
Aaon black | 5.99:1 | 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 #f34f39 as the background.
Brands using this color
Fonts for this mood
#f34f39 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 #f34f39 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/f34f39-c4a59c-62cba4-2d271f-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