Color
#fb5151
#fb5151rgb(251, 81, 81)hsl(0, 96%, 65%)oklch(0.671 0.207 24.6)Colors that go with #fb5151
Charcoal, Light Sea Green 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 #fb5151: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Light Sea Green #20b2aa
complementaryshippedLight Sea Green sits directly opposite #fb5151 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shippedBlue is paired with #fb5151 in 6 real palettes, including Monzo's brand system and Glossier's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Crimson #dc143c
shippedCrimson is paired with #fb5151 in 5 real palettes, including Wise's brand system and Redfin's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #fb5151 in 6 real palettes, including Strava's brand system and PlanetScale's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Dodger Blue #1e90ff
shippedDodger Blue is paired with #fb5151 in 4 real palettes, including Figma's brand system and Heatwave, as the accent — a combination designers have actually shipped, not a computed rotation.
Gold #ffd700
shippedGold is paired with #fb5151 in 6 real palettes, including Streetwear and Night Market, as the accent — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #fb5151
Tints & shades
Harmonies
Contrast
| #fb5151 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.28:1 | fail | pass | fail | |
Aaon black | 6.4:1 | 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 #fb5151 as the background.
Brands using this color
Fonts for this mood
#fb5151 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 #fb5151 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/fb5151-c4a19c-62cb98-2d251f-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