Color
#0a2f80
#0a2f80rgb(10, 47, 128)hsl(221, 86%, 27%)oklch(0.34 0.143 262.8)Colors that go with #0a2f80
Charcoal, Crimson and Steel 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 #0a2f80: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
triadicshippedCrimson completes a triad with #0a2f80 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Steel Blue #4682b4
analogousshippedSteel Blue is #0a2f80's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Blue #0000ff
shipped4 real palettes, including Alaska Airlines's brand system and Procter & Gamble's brand system put Blue beside #0a2f80, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #0a2f80: 14 real palettes, including Hasbro's brand system and Bank of America's brand system, as the supporting colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #0a2f80 in 10 real palettes, including Discord's brand system and Confluent's brand system, as the lead colour.
Olive Green #808000
complementaryOlive Green sits directly opposite #0a2f80 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #0a2f80: 3 real palettes, including Blue Mono and Peacock's brand system, as the supporting colour.
Real palettes that use #0a2f80
Tints & shades
Harmonies
Contrast
| #0a2f80 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 12.13:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.73:1 | 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 #0a2f80 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#0a2f80 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 #0a2f80 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/0a2f80-9ca4c4-df6b4e-211f2d-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