Color
#172a72
#172a72rgb(23, 42, 114)hsl(227, 66%, 27%)oklch(0.32 0.126 267.3)Colors that go with #172a72
Charcoal, Steel Blue 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 #172a72: softer than #000 and cool enough to feel like part of the same palette.
Steel Blue #4682b4
analogousshippedSteel Blue is #172a72's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Blue #0000ff
shipped5 real palettes, including Alaska Airlines's brand system and Procter & Gamble's brand system put Blue beside #172a72, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #172a72: 4 real palettes, including Open House and SoFi's brand system, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #172a72: 4 real palettes, including Purina Pro Plan's brand system and Blue Mono, as the accent.
Crimson #dc143c
shippedCrimson is paired with #172a72 in 7 real palettes, including Nintendo's brand system and Casper Sleep's brand system, as the supporting colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #172a72: 4 real palettes, including Kraken's brand system and Deep Water, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #172a72: 18 real palettes, including Bank of America's brand system and Panasonic's brand system, as the accent.
Real palettes that use #172a72
Tints & shades
Harmonies
Contrast
| #172a72 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 13.04:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.61:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #172a72 as the background.
Brands using this color
Fonts for this mood
#172a72 reads as cool, vivid, dark. 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 #172a72 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/172a72-9ca0c4-df7a4e-221f2d-e9eff1?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