Color
#c51b59
#c51b59rgb(197, 27, 89)hsl(338, 76%, 44%)oklch(0.538 0.202 7.3)Colors that go with #c51b59
Steel Blue, Teal 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.
Steel Blue #4682b4
triadicshippedSteel Blue completes a triad with #c51b59 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Teal #008080
complementaryshippedTeal sits directly opposite #c51b59 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #c51b59 in 6 real palettes, including Maple and Ember, as the accent.
Blue #0000ff
shipped4 real palettes, including Dunkin''s brand system and Tim Hortons's brand system put Blue beside #c51b59, as the supporting colour.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #c51b59: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Denim #1560bd
shippedDesigners have shipped Denim with #c51b59: 12 real palettes, including Chase's brand system and Ulta Beauty's brand system, as the lead colour.
Gold #ffd700
shippedGold shows up next to #c51b59 in 4 real palettes, including Tabloid and Lay's's brand system, as the accent.
Midnight Blue #191970
shipped5 real palettes, including MLB's brand system and Nintendo's brand system put Midnight Blue beside #c51b59, as the lead colour.
Real palettes that use #c51b59
Tints & shades
Harmonies
Contrast
| #c51b59 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.71:1 | pass | pass | fail |
|
Aaon black | 3.68:1 | fail | 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 #c51b59 as the background.
Brands using this color
Fonts for this mood
#c51b59 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 #c51b59 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/c51b59-c49ca6-62cb72-2d201f-f1e9f0?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