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
#fb3504
#fb3504
hex
#fb3504rgb
rgb(251, 53, 4)hsl
hsl(12, 97%, 50%)oklch
oklch(0.641 0.236 32.8)Closest name: orangered (#ff4500)Relative luminance 0.2306
Colors that go with #fb3504
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 #fb3504: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Cadet Blue #5f9ea0
complementaryshippedCadet Blue sits directly opposite #fb3504 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 #fb3504 in 7 real palettes, including Heatwave and Google's brand system, as the supporting colour.
Blue #0000ff
shipped8 real palettes, including Doordash's brand system and Glossier's brand system put Blue beside #fb3504, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #fb3504: 4 real palettes, including NASA's brand system and Tide's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #fb3504: 14 real palettes, including L'Oréal's brand system and YouTube's brand system, as the accent.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #fb3504: 7 real palettes, including Databricks's brand system and Figma's brand system, as the accent.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #fb3504: 8 real palettes, including 3M's brand system and Ember, as the supporting colour.
Real palettes that use #fb3504
Tints & shades
Harmonies
Contrast
| #fb3504 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.74:1 | fail | pass | fail | |
Aaon black | 5.61:1 | 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 #fb3504 as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#fb3504 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #fb3504
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 #fb3504 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/fb3504-c4a99c-62cbad-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