Color
#428581
#428581rgb(66, 133, 129)hsl(176, 34%, 39%)oklch(0.572 0.069 190.3)Colors that go with #428581
Charcoal, Copper and Champagne 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 text near-black for #428581: softer than #000 and cool enough to feel like part of the same palette.
Copper #b87333
triadicshippedCopper completes a triad with #428581 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Champagne #f7e7ce
shipped4 real palettes, including Forest Floor and Coffee Bar put Champagne beside #428581, as that palette's text colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #428581: 5 real palettes, including Intel's brand system and Ink & Paper, as the lead colour.
Crimson #dc143c
shippedCrimson is paired with #428581 in 7 real palettes, including Redfin's brand system and Retro Pop, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #428581: 10 real palettes, including Peacock and Intel's brand system, as the supporting colour.
Goldenrod #daa520
shippedGoldenrod shows up next to #428581 in 5 real palettes, including Mid-Century and Sapphire & Gold, as the accent.
Midnight Blue #191970
shipped7 real palettes, including Tide Pool and Paramount+'s brand system put Midnight Blue beside #428581, as that palette's text colour.
Real palettes that use #428581
Tints & shades
Harmonies
Contrast
| #428581 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.28:1 | fail | pass | fail | |
Aaon black | 4.9:1 | 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 #428581 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 #428581 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/428581-a2bdbe-d4599d-1f282d-e9f1ed?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