Color
#517d21
#517d21rgb(81, 125, 33)hsl(89, 58%, 31%)oklch(0.538 0.13 131.8)Colors that go with #517d21
Charcoal, Crimson and Denim 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 #517d21: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Crimson #dc143c
triadicshippedCrimson completes a triad with #517d21 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Denim #1560bd
triadicshippedDenim completes a triad with #517d21 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Royal Blue #4169e1
shippedRoyal Blue is paired with #517d21 in 5 real palettes, including Xbox's brand system and Subaru's brand system, as the accent.
Sage Green #9caf88
shippedDesigners have shipped Sage Green with #517d21: 4 real palettes, including Olive Grove and Forest Floor, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #517d21 in 13 real palettes, including Acer's brand system and Subaru's brand system, as that palette's text colour.
Dark Orchid #9932cc
complementaryDark Orchid sits directly opposite #517d21 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Medium Violet Red #c71585
split-complementshippedMedium Violet Red is a split-complement of #517d21: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use #517d21
Tints & shades
Harmonies
Contrast
| #517d21 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.88:1 | pass | pass | fail |
|
Aaon black | 4.31:1 | 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 #517d21 as the background.
Brands using this color
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 #517d21 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/517d21-adbea2-4e4edf-212d1f-f1f1e9?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