Color
#0b5489
#0b5489rgb(11, 84, 137)hsl(205, 85%, 29%)oklch(0.434 0.109 247.3)Colors that go with #0b5489
Crimson, Royal Blue and Sienna 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.
Crimson #dc143c
triadicshippedCrimson completes a triad with #0b5489 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Royal Blue #4169e1
analogousshippedRoyal Blue is #0b5489's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Sienna #a0522d
complementaryshippedSienna sits directly opposite #0b5489 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped7 real palettes, including CVS's brand system and Tesco's brand system put Blue beside #0b5489, as the supporting colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #0b5489: 6 real palettes, including Campbell's's brand system and AT&T's brand system, as the supporting colour.
Goldenrod #daa520
shippedGoldenrod shows up next to #0b5489 in 5 real palettes, including Open House and Sapphire & Gold, as the accent.
Midnight Blue #191970
shipped19 real palettes, including First Snow and FIFA's brand system put Midnight Blue beside #0b5489, as that palette's text colour.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #0b5489: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #0b5489
Tints & shades
Harmonies
Contrast
| #0b5489 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 7.94:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.64:1 | 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 #0b5489 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
#0b5489 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 #0b5489 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/0b5489-9cafc4-df4e58-1f212d-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