Color
#377b63
#377b63rgb(55, 123, 99)hsl(159, 38%, 35%)oklch(0.532 0.08 167.6)Colors that go with #377b63
Charcoal, Medium Violet Red 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 text near-black for #377b63: softer than #000 and cool enough to feel like part of the same palette.
Medium Violet Red #c71585
complementaryshippedMedium Violet Red sits directly opposite #377b63 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped4 real palettes, including Warp's brand system and Kia's brand system put Blue beside #377b63, as the supporting colour.
Champagne #f7e7ce
shipped5 real palettes, including Forest Floor and BrandSweets's brand system put Champagne beside #377b63, as that palette's text colour.
Copper #b87333
shippedDesigners have shipped Copper with #377b63: 5 real palettes, including Riverbed and Wellness, as the accent.
Crimson #dc143c
shippedCrimson is paired with #377b63 in 8 real palettes, including Gemstone and Five Guys's brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #377b63: 9 real palettes, including Intel's brand system and Jack Daniel's's brand system, as the supporting colour.
Firebrick #b22222
split-complementshippedFirebrick is a split-complement of #377b63: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use #377b63
Tints & shades
Harmonies
Contrast
| #377b63 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.03:1 | pass | pass | fail |
|
Aaon black | 4.18:1 | fail | 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 #377b63 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 #377b63 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/377b63-a2beb8-d459c0-1f2c2d-e9f1eb?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