Electric Lime
Open in tool →One neon on white with black type — lime-and-black is the neon that works in daylight; the orange is a second gear.
Color
#fc4503
#fc4503
hex
#fc4503rgb
rgb(252, 69, 3)hsl
hsl(16, 98%, 50%)oklch
oklch(0.655 0.226 35.4)Closest name: orangered (#ff4500)Relative luminance 0.2496
Colors that go with #fc4503
Charcoal, Cadet Blue 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.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #fc4503: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Cadet Blue #5f9ea0
complementaryshippedCadet Blue sits directly opposite #fc4503 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #fc4503 in 7 real palettes, including Heatwave and Ember, as the supporting colour.
Blue #0000ff
shipped8 real palettes, including Glossier's brand system and Readymag's brand system put Blue beside #fc4503, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #fc4503: 5 real palettes, including Tide's brand system and NASA's brand system, as the lead colour.
Crimson #dc143c
shippedCrimson is paired with #fc4503 in 8 real palettes, including Pizza Hut's brand system and Wise's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #fc4503: 14 real palettes, including Strava's brand system and Soundcloud's brand system, as the accent.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #fc4503: 7 real palettes, including Heatwave and Readymag's brand system, as the accent.
Real palettes that use #fc4503
Tints & shades
Harmonies
Contrast
| #fc4503 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.5:1 | 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 #fc4503 as the background.
Brands using this color
- Redditsecondary · #fc4301 · Δ0.259
- Redditprimary · #ff4500 · Δ0.577
- Glossiersecondary · #f94200 · Δ0.787
- HubSpotsecondary · #ff4800 · Δ0.806
- Tideaccent · #fb4c06 · Δ0.949
- Together AIprimary · #fc4c02 · Δ1.008
- Brexsecondary · #ff3d00 · Δ1.012
- Cursorprimary · #f54e00 · Δ1.657
- Cursorsecondary · #f54e00 · Δ1.657
- NASAsecondary · #fc3d21 · Δ1.714
- Readymagaccent · #ff5000 · Δ1.849
- Figmaprimary · #f24e1e · Δ1.972
- FigmalogoRed · #f24e1e · Δ1.972
Palettes built around it
Fonts for this mood
#fc4503 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #fc4503
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 #fc4503 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/fc4503-c4ab9c-62cbb4-2d291f-f1e9eb?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