Color
#378b7e
#378b7ergb(55, 139, 126)hsl(171, 43%, 38%)oklch(0.582 0.083 181.4)Colors that go with #378b7e
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 #378b7e: softer than #000 and cool enough to feel like part of the same palette.
Copper #b87333
triadicshippedCopper completes a triad with #378b7e — 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 #378b7e 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 #378b7e in 8 real palettes, including Redfin's brand system and Diner, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #378b7e: 8 real palettes, including Peacock and Intel's brand system, as the supporting colour.
Goldenrod #daa520
shippedGoldenrod shows up next to #378b7e in 4 real palettes, including Mid-Century and Sapphire & Gold, as the accent.
Midnight Blue #191970
shipped8 real palettes, including Tide Pool and Paramount+'s brand system put Midnight Blue beside #378b7e, as that palette's text colour.
Orange #ffa500
shipped4 real palettes, including Campus and Graphite put Orange beside #378b7e, as the accent.
Real palettes that use #378b7e
Tints & shades
Harmonies
Contrast
| #378b7e as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.07:1 | fail | pass | fail | |
Aaon black | 5.16:1 | 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 #378b7e 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 #378b7e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/378b7e-a2bebd-d459a7-1f292d-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