Color
#ef350b
#ef350brgb(239, 53, 11)hsl(11, 91%, 49%)oklch(0.62 0.225 32.8)Colors that go with #ef350b
Charcoal, Sea Green 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 #ef350b: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #ef350b — 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 #ef350b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Amber #ffbf00
shippedAmber is paired with #ef350b in 5 real palettes, including Wired's brand system and Heatwave, as the accent.
Blue #0000ff
shipped10 real palettes, including Doordash's brand system and Glossier's brand system put Blue beside #ef350b, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #ef350b: 13 real palettes, including ElevenLabs's brand system and Netflix's brand system, as the accent.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #ef350b: 6 real palettes, including Databricks's brand system and Replit's brand system, as the accent.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #ef350b: 4 real palettes, including Vodafone's brand system and Nintendo's brand system, as the supporting colour.
Real palettes that use #ef350b
Tints & shades
Harmonies
Contrast
| #ef350b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.05:1 | fail | pass | fail | |
Aaon black | 5.18:1 | 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 #ef350b as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#ef350b 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 #ef350b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/ef350b-c4a89c-62cbab-2d281f-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