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
#fb4909
#fb4909
hex
#fb4909rgb
rgb(251, 73, 9)hsl
hsl(16, 97%, 51%)oklch
oklch(0.657 0.222 35.9)Closest name: orangered (#ff4500)Relative luminance 0.2529
Colors that go with #fb4909
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 #fb4909: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Cadet Blue #5f9ea0
complementaryshippedCadet Blue sits directly opposite #fb4909 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 #fb4909 in 5 real palettes, including Heatwave and Ember, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Blue #0000ff
shippedBlue is paired with #fb4909 in 7 real palettes, including Glossier's brand system and Readymag's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Crimson #dc143c
shippedCrimson is paired with #fb4909 in 6 real palettes, including Wise's brand system and Redfin's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #fb4909 in 9 real palettes, including Strava's brand system and Soundcloud's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Dodger Blue #1e90ff
shippedDodger Blue is paired with #fb4909 in 7 real palettes, including Heatwave and Readymag's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Firebrick #b22222
shippedFirebrick is paired with #fb4909 in 4 real palettes, including Ember and Maple, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #fb4909
Tints & shades
Harmonies
Contrast
| #fb4909 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.47:1 | fail | pass | fail | |
Aaon black | 6.06:1 | 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 #fb4909 as the background.
Brands using this color
- Tideaccent · #fb4c06 · Δ0.468
- Together AIprimary · #fc4c02 · Δ0.582
- HubSpotsecondary · #ff4800 · Δ0.741
- Redditsecondary · #fc4301 · Δ0.758
- Redditprimary · #ff4500 · Δ0.787
- Glossiersecondary · #f94200 · Δ1.103
- Cursorprimary · #f54e00 · Δ1.285
- Cursorsecondary · #f54e00 · Δ1.285
- Readymagaccent · #ff5000 · Δ1.491
- Brexsecondary · #ff3d00 · Δ1.507
- Figmaprimary · #f24e1e · Δ1.693
- FigmalogoRed · #f24e1e · Δ1.693
- Prepare your taste buds...primary · #fc5404 · Δ1.781
- Stravaprimary · #fc5404 · Δ1.781
- Substackprimary · #fc5404 · Δ1.781
Palettes built around it
Fonts for this mood
#fb4909 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #fb4909
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 #fb4909 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/fb4909-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