Color
#18858b
#18858brgb(24, 133, 139)hsl(183, 71%, 32%)oklch(0.563 0.091 200.8)Colors that go with #18858b
Charcoal, Crimson and Cobalt 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 #18858b: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
complementaryshippedCrimson sits directly opposite #18858b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #18858b: 6 real palettes, including Intel's brand system and Glacier, as the lead colour.
Copper #b87333
shippedDesigners have shipped Copper with #18858b: 6 real palettes, including Riverbed and Wellness, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #18858b: 11 real palettes, including Peacock and Discover's brand system, as the supporting colour.
Goldenrod #daa520
shippedGoldenrod shows up next to #18858b in 5 real palettes, including Sapphire & Gold and Mid-Century, as the supporting colour.
Midnight Blue #191970
shipped9 real palettes, including Tide Pool and Discover's brand system put Midnight Blue beside #18858b, as that palette's text colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #18858b in 4 real palettes, including Slate Workspace and Coinbase's brand system, as the accent.
Real palettes that use #18858b
Tints & shades
Harmonies
Contrast
| #18858b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.41:1 | fail | pass | fail | |
Aaon black | 4.77:1 | 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 #18858b as the background.
Brands using this color
Fonts for this mood
#18858b reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
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 #18858b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/18858b-a2b9be-d4598e-1f262d-e9f1ee?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