Color
#3f727d
#3f727drgb(63, 114, 125)hsl(191, 33%, 37%)oklch(0.521 0.057 213.2)Colors that go with #3f727d
Charcoal, Sienna 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 #3f727d: softer than #000 and cool enough to feel like part of the same palette.
Sienna #a0522d
complementaryshippedSienna sits directly opposite #3f727d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Champagne #f7e7ce
shipped5 real palettes, including Darkroom and Forest Floor put Champagne beside #3f727d, as the surface under it.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #3f727d: 6 real palettes, including Ink & Paper and Fintech Trust, as the accent.
Copper #b87333
shippedDesigners have shipped Copper with #3f727d: 5 real palettes, including Riverbed and Desert Road, as the accent.
Crimson #dc143c
shippedCrimson is paired with #3f727d in 9 real palettes, including Gemstone and Redfin's brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #3f727d: 13 real palettes, including Campus and The New York Times's brand system, as the lead colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #3f727d: 4 real palettes, including Wendy's's brand system and Newsprint, as the supporting colour.
Real palettes that use #3f727d
Tints & shades
Harmonies
Contrast
| #3f727d as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.36:1 | pass | pass | fail |
|
Aaon black | 3.91:1 | 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 #3f727d 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 #3f727d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3f727d-a2b6be-df4e7a-1f252d-e9f1ef?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