Heatwave
Open in tool →Blaze orange and hot yellow with one cold blue — the high-noon palette; use the blue where the eye needs to rest.
Color
#fc5527
#fc5527
hex
#fc5527rgb
rgb(252, 85, 39)hsl
hsl(13, 97%, 57%)oklch
oklch(0.672 0.211 35.5)Closest name: orangered (#ff4500)Relative luminance 0.2734
Colors that go with #fc5527
Cadet Blue, Charcoal 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.
Cadet Blue #5f9ea0
complementaryshippedCadet Blue sits directly opposite #fc5527 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #fc5527: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Amber #ffbf00
shippedAmber is paired with #fc5527 in 8 real palettes, including Heatwave and Ember, as the supporting colour.
Blue #0000ff
shipped7 real palettes, including Readymag's brand system and Monzo's brand system put Blue beside #fc5527, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #fc5527: 4 real palettes, including Tide's brand system and NASA's brand system, as the lead colour.
Cornflower Blue #6495ed
split-complementshippedCornflower Blue is a split-complement of #fc5527: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Crimson #dc143c
shippedCrimson is paired with #fc5527 in 9 real palettes, including Pizza Hut's brand system and Wise's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #fc5527: 15 real palettes, including Strava's brand system and Soundcloud's brand system, as the accent.
Real palettes that use #fc5527
Tints & shades
Harmonies
Contrast
| #fc5527 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.25:1 | fail | pass | fail | |
Aaon black | 6.47:1 | 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 #fc5527 as the background.
Brands using this color
- Prepare your taste buds...primary · #fc5404 · Δ1.263
- Stravaprimary · #fc5404 · Δ1.263
- Substackprimary · #fc5404 · Δ1.263
- Readymagaccent · #ff5000 · Δ1.341
- Soundcloudsecondary · #ff5500 · Δ1.448
- Intercomsecondary · #ff5600 · Δ1.52
- Together AIprimary · #fc4c02 · Δ1.601
- Tideaccent · #fb4c06 · Δ1.622
- Cloudflaresecondary · #ff5e1f · Δ1.909
- HubSpotsecondary · #ff4800 · Δ1.914
Palettes built around it
Fonts for this mood
#fc5527 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #fc5527
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 #fc5527 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/fc5527-c4a99c-62cbaf-2d281f-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