Golden Hour
Open in tool →Apricot into coral into plum — a sunset flattened to three tokens, with the plum doubling as the twilight text colour.
Color
#ef5d52
#ef5d52
hex
#ef5d52rgb
rgb(239, 93, 82)hsl
hsl(4, 83%, 63%)oklch
oklch(0.666 0.182 27.4)Closest name: Amour (#ee5851)Relative luminance 0.2679
Colors that go with #ef5d52
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 #ef5d52 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 #ef5d52: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Blue #0000ff
shipped7 real palettes, including Monzo's brand system and Readymag's brand system put Blue beside #ef5d52, as the accent.
Crimson #dc143c
shippedCrimson is paired with #ef5d52 in 7 real palettes, including Redfin's brand system and Snyk's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #ef5d52: 10 real palettes, including PlanetScale's brand system and Strava's brand system, as the accent.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #ef5d52: 8 real palettes, including Figma's brand system and Replit's brand system, as the accent.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #ef5d52: 4 real palettes, including Ember and Maple, as the supporting colour.
Real palettes that use #ef5d52
Tints & shades
Harmonies
Contrast
| #ef5d52 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.3:1 | fail | pass | fail | |
Aaon black | 6.36:1 | 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 #ef5d52 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
#ef5d52 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #ef5d52
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 #ef5d52 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/ef5d52-c4a39c-62cb9f-2d261f-f1e9ed?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