Color
#186da5
#186da5rgb(24, 109, 165)hsl(204, 75%, 37%)oklch(0.515 0.117 243.9)Colors that go with #186da5
Charcoal, Royal Blue and Amber 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 #186da5: softer than #000 and cool enough to feel like part of the same palette.
Royal Blue #4169e1
analogousshippedRoyal Blue is #186da5's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Amber #ffbf00
shippedAmber is paired with #186da5 in 7 real palettes, including Lemon Squeezy's brand system and Wired's brand system, as the lead colour.
Blue #0000ff
shipped4 real palettes, including Pixar's brand system and CVS's brand system put Blue beside #186da5, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #186da5: 6 real palettes, including Glacier and Fintech Trust, as the accent.
Crimson #dc143c
shippedCrimson is paired with #186da5 in 11 real palettes, including Amazon's brand system and State Farm's brand system, as the supporting colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #186da5: 4 real palettes, including AT&T's brand system and Wendy's's brand system, as the accent.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #186da5 in 5 real palettes, including Fintech Trust and Khan Academy's brand system, as the accent.
Real palettes that use #186da5
Tints & shades
Harmonies
Contrast
| #186da5 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.57:1 | pass | pass | fail |
|
Aaon black | 3.77:1 | 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 #186da5 as the background.
Brands using this color
Fonts for this mood
#186da5 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 #186da5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/186da5-9cafc4-df4e5a-1f222d-e9f1f0?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