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
#fd451c
#fd451c
hex
#fd451crgb
rgb(253, 69, 28)hsl
hsl(11, 98%, 55%)oklch
oklch(0.658 0.226 33.4)Closest name: orangered (#ff4500)Relative luminance 0.2522
Colors that go with #fd451c
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 #fd451c: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Cadet Blue #5f9ea0
complementaryshippedCadet Blue sits directly opposite #fd451c 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 #fd451c in 5 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 #fd451c, as the accent.
Crimson #dc143c
shippedCrimson is paired with #fd451c in 6 real palettes, including Wise's brand system and Snyk's brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #fd451c: 9 real palettes, including Strava's brand system and Soundcloud's brand system, as the accent.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #fd451c: 6 real palettes, including Heatwave and Readymag's brand system, as the accent.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #fd451c: 4 real palettes, including Ember and Nintendo's brand system, as the supporting colour.
Real palettes that use #fd451c
Tints & shades
Harmonies
Contrast
| #fd451c as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.47:1 | fail | pass | fail | |
Aaon black | 6.04:1 | 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 #fd451c as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#fd451c reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #fd451c
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 #fd451c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/fd451c-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