Color
#0d387d
#0d387drgb(13, 56, 125)hsl(217, 81%, 27%)oklch(0.358 0.126 260)Colors that go with #0d387d
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 #0d387d: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
triadicshippedCrimson completes a triad with #0d387d — 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 #0d387d'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 #0d387d, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #0d387d: 18 real palettes, including Hasbro's brand system and Panasonic's brand system, as the supporting colour.
Orange Red #ff4500
shippedOrange Red is paired with #0d387d in 5 real palettes, including NASA's brand system and Tide's brand system, as the supporting colour.
Powder Blue #b0e0e6
shippedDesigners have shipped Powder Blue with #0d387d: 4 real palettes, including Glacier and Frost & Ember, as the supporting colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #0d387d in 11 real palettes, including Nokia's brand system and Confluent's brand system, as the supporting colour.
Real palettes that use #0d387d
Tints & shades
Harmonies
Contrast
| #0d387d as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 11.18:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.88:1 | 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 #0d387d 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
#0d387d 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 #0d387d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/0d387d-9ca7c4-df624e-201f2d-e9f0f1?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