Color
#288a39
#288a39rgb(40, 138, 57)hsl(130, 55%, 35%)oklch(0.559 0.148 146.1)Colors that go with #288a39
Charcoal, Crimson and Royal 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.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #288a39: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Crimson #dc143c
triadicshippedCrimson completes a triad with #288a39 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Royal Blue #4169e1
triadicshippedRoyal Blue completes a triad with #288a39 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Dark Orchid #9932cc
complementaryshippedDark Orchid sits directly opposite #288a39 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Denim #1560bd
shippedDesigners have shipped Denim with #288a39: 6 real palettes, including Xbox's brand system and Intel's brand system, as the supporting colour.
Midnight Blue #191970
shipped4 real palettes, including Paramount+'s brand system and Telehealth put Midnight Blue beside #288a39, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #288a39 in 10 real palettes, including Instacart's brand system and Acer's brand system, as the lead colour.
Medium Violet Red #c71585
split-complementshippedMedium Violet Red is a split-complement of #288a39: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use #288a39
Tints & shades
Harmonies
Contrast
| #288a39 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.39:1 | fail | pass | fail | |
Aaon black | 4.78:1 | 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 #288a39 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
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 #288a39 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/288a39-a2beaa-b14edf-1f2d28-ecf1e9?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