Arctic
Open in tool →Navy type on white with an ice-blue accent: crisp and corporate without going grey.
Color
#858fa3
#858fa3
hex
#858fa3rgb
rgb(133, 143, 163)hsl
hsl(220, 14%, 58%)oklch
oklch(0.649 0.032 264.3)Closest name: Cool Gray (#8c92ac)Relative luminance 0.2728
Colors that go with #858fa3
Charcoal, Copper and Blush Pink 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 #858fa3: softer than #000 and cool enough to feel like part of the same palette.
Copper #b87333
split-complementshippedCopper is a split-complement of #858fa3: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Blush Pink #e8b4b8
shipped4 real palettes, including Estate and Rain Garden put Blush Pink beside #858fa3, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #858fa3: 6 real palettes, including Dusk and Open House, as the lead colour.
Midnight Blue #191970
shipped7 real palettes, including Open House and Plaid's brand system put Midnight Blue beside #858fa3, as the text colour against it.
Powder Blue #b0e0e6
shippedDesigners have shipped Powder Blue with #858fa3: 4 real palettes, including Ink Wash and Stone, as the lead colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #858fa3 in 4 real palettes, including Slate Workspace and Sephora's brand system, as the accent.
Taupe #483c32
shippedTaupe is paired with #858fa3 in 23 real palettes, including Dusk and Typewriter, as the text colour against it.
Real palettes that use #858fa3
Tints & shades
Harmonies
Contrast
| #858fa3 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.25:1 | fail | pass | fail | |
Aaon black | 6.46:1 | 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 #858fa3 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
mcpConnect your agent — build around #858fa3
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #858fa3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/858fa3-9ca5c4-df694e-211f2d-e9f0f1?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