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
#ffb405
#ffb405
hex
#ffb405rgb
rgb(255, 180, 5)hsl
hsl(42, 100%, 51%)oklch
oklch(0.82 0.17 78.3)Closest name: Amber (#ffbf00)Relative luminance 0.5391
Colors that go with #ffb405
Charcoal, Deep Sky Blue and Crimson 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 #ffb405: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Deep Sky Blue #00bfff
complementaryshippedDeep Sky Blue sits directly opposite #ffb405 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Crimson #dc143c
shippedCrimson is paired with #ffb405 in 4 real palettes, including Tequila Sunrise and Tabloid, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Rust #b7410e
shippedRust is paired with #ffb405 in 4 real palettes, including Trailhead and Garnet, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Sage Green #9caf88
shippedSage Green is paired with #ffb405 in 6 real palettes, including Graphite and Polaroid, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Slate Gray #708090
shippedSlate Gray is paired with #ffb405 in 6 real palettes, including Campus and Graphite, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Taupe #483c32
shippedTaupe is paired with #ffb405 in 11 real palettes, including Mid-Century and Polaroid, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Tomato #ff6347
shippedTomato is paired with #ffb405 in 6 real palettes, including Sunset Boulevard and Ember, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Tints & shades
Harmonies
Contrast
| #ffb405 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.78:1 | fail | fail | fail | |
Aaon black | 11.78:1 | pass | pass | pass | Passes AAA — no fix needed. |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ffb405 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
Fonts for this mood
#ffb405 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #ffb405
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 #ffb405 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/ffb405-c4bc9c-62b4cb-2b2d1f-f1ebe9?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