Color
#ef3997
#ef3997rgb(239, 57, 151)hsl(329, 85%, 58%)oklch(0.647 0.229 354.3)Colors that go with #ef3997
Crimson, Light Sea Green and Cadet Blue 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.
Crimson #dc143c
shippedCrimson is paired with #ef3997 in 4 real palettes, including The Ordinary's brand system and Snyk's brand system, as the supporting colour.
Light Sea Green #20b2aa
complementaryLight Sea Green sits directly opposite #ef3997 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Cadet Blue #5f9ea0
split-complementshippedCadet Blue is a split-complement of #ef3997: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Medium Sea Green #3cb371
split-complementshippedMedium Sea Green is a split-complement of #ef3997: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #ef3997: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Gold #ffd700
shippedGold shows up next to #ef3997 in 3 real palettes, including Night Market and Tabloid, as the accent.
Tomato #ff6347
shipped3 real palettes, including Night Market and Sunset Boulevard put Tomato beside #ef3997, as the lead colour.
Steel Blue #4682b4
triadicshippedSteel Blue completes a triad with #ef3997 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Real palettes that use #ef3997
Tints & shades
Harmonies
Contrast
| #ef3997 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.68:1 | fail | pass | fail | |
Aaon black | 5.7:1 | 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 #ef3997 as the background.
Brands using this color
Fonts for this mood
#ef3997 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:
Point 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.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #ef3997 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/ef3997-c49cac-62cb62-2d1f21-f1e9f1?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