Color
#428f7d
#428f7drgb(66, 143, 125)hsl(166, 37%, 41%)oklch(0.596 0.082 175.9)Colors that go with #428f7d
Charcoal, Copper and Medium Violet Red 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 #428f7d: softer than #000 and cool enough to feel like part of the same palette.
Copper #b87333
triadicshippedCopper completes a triad with #428f7d — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Medium Violet Red #c71585
complementaryshippedMedium Violet Red sits directly opposite #428f7d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Crimson #dc143c
shippedCrimson is paired with #428f7d in 9 real palettes, including Diner and Five Guys's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #428f7d: 7 real palettes, including Peacock and Intel's brand system, as the supporting colour.
Goldenrod #daa520
shippedGoldenrod shows up next to #428f7d in 4 real palettes, including Noir Beauty and Ledger Dark, as the lead colour.
Midnight Blue #191970
shipped8 real palettes, including Tide Pool and Paramount+'s brand system put Midnight Blue beside #428f7d, as that palette's text colour.
Orange #ffa500
shipped4 real palettes, including Campus and Farmers Market put Orange beside #428f7d, as the accent.
Real palettes that use #428f7d
Tints & shades
Harmonies
Contrast
| #428f7d as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.85:1 | fail | pass | fail | |
Aaon black | 5.46:1 | 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 #428f7d 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 #428f7d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/428f7d-a2bebb-d459b1-1f2a2d-e9f1ec?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