Color
#428f51
#428f51rgb(66, 143, 81)hsl(132, 37%, 41%)oklch(0.585 0.121 148.1)Colors that go with #428f51
Charcoal, Royal Blue and Copper 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 #428f51: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Royal Blue #4169e1
triadicshippedRoyal Blue completes a triad with #428f51 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Copper #b87333
shippedDesigners have shipped Copper with #428f51: 4 real palettes, including Wellness and Clean Beauty, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #428f51 in 7 real palettes, including Five Guys's brand system and Netflix's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #428f51: 6 real palettes, including Intel's brand system and Jack Daniel's's brand system, as the supporting colour.
Midnight Blue #191970
shipped4 real palettes, including Paramount+'s brand system and Telehealth put Midnight Blue beside #428f51, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #428f51 in 13 real palettes, including Subaru's brand system and Wellness, as that palette's text colour.
Medium Orchid #ba55d3
complementaryMedium Orchid sits directly opposite #428f51 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Real palettes that use #428f51
Tints & shades
Harmonies
Contrast
| #428f51 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.98:1 | fail | pass | fail | |
Aaon black | 5.28:1 | 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 #428f51 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 #428f51 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/428f51-a2beab-b64edf-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