Color
#428f43
#428f43rgb(66, 143, 67)hsl(121, 37%, 41%)oklch(0.583 0.135 143.8)Colors that go with #428f43
Charcoal, Royal Blue and 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 #428f43: 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 #428f43 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Blue #0000ff
shipped4 real palettes, including Kia's brand system and Instacart's brand system put Blue beside #428f43, as the accent.
Copper #b87333
shippedDesigners have shipped Copper with #428f43: 4 real palettes, including Wellness and Clean Beauty, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #428f43 in 6 real palettes, including Coinbase's brand system and Five Guys's brand system.
Denim #1560bd
shippedDesigners have shipped Denim with #428f43: 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 #428f43, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #428f43 in 12 real palettes, including Subaru's brand system and Acer's brand system, as that palette's text colour.
Real palettes that use #428f43
Tints & shades
Harmonies
Contrast
| #428f43 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.01:1 | fail | pass | fail | |
Aaon black | 5.24:1 | 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 #428f43 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 #428f43 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/428f43-a2bea6-9b4edf-1f2d26-edf1e9?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