Color
#0a2175
#0a2175rgb(10, 33, 117)hsl(227, 84%, 25%)oklch(0.301 0.145 265.4)Colors that go with #0a2175
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 #0a2175: softer than #000 and cool enough to feel like part of the same palette.
Steel Blue #4682b4
analogousshippedSteel Blue is #0a2175'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 Monzo's brand system put Blue beside #0a2175, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #0a2175: 5 real palettes, including Purina Pro Plan's brand system and Blue Mono, as the accent.
Crimson #dc143c
shippedCrimson is paired with #0a2175 in 5 real palettes, including Nintendo's brand system and Casper Sleep's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #0a2175: 12 real palettes, including Bank of America's brand system and Panasonic's brand system, as the accent.
Royal Blue #4169e1
shippedRoyal Blue is paired with #0a2175 in 8 real palettes, including Discord's brand system and Confluent's brand system, as the lead colour.
Tomato #ff6347
shipped4 real palettes, including dbt Labs's brand system and Harley-Davidson's brand system put Tomato beside #0a2175, as the lead colour.
Real palettes that use #0a2175
Tints & shades
Harmonies
Contrast
| #0a2175 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 14.12:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.49:1 | 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 #0a2175 as the background.
Brands using this color
Fonts for this mood
#0a2175 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 #0a2175 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/0a2175-9ca0c4-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