Color
#278b79
#278b79rgb(39, 139, 121)hsl(169, 56%, 35%)oklch(0.576 0.094 178)Colors that go with #278b79
Charcoal, Copper and Crimson 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 #278b79: softer than #000 and cool enough to feel like part of the same palette.
Copper #b87333
triadicshippedCopper completes a triad with #278b79 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Crimson #dc143c
split-complementshippedCrimson is a split-complement of #278b79: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Medium Violet Red #c71585
complementaryshippedMedium Violet Red sits directly opposite #278b79 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 #278b79: 7 real palettes, including Peacock and Intel's brand system, as the supporting colour.
Goldenrod #daa520
shippedGoldenrod shows up next to #278b79 in 4 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 #278b79, as that palette's text colour.
Orange #ffa500
shipped4 real palettes, including Farmers Market and Campus put Orange beside #278b79, as the accent.
Real palettes that use #278b79
Tints & shades
Harmonies
Contrast
| #278b79 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.15:1 | fail | pass | fail | |
Aaon black | 5.06:1 | 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 #278b79 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 #278b79 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/278b79-a2bebc-d459ab-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