Color
#191f85
#191f85rgb(25, 31, 133)hsl(237, 68%, 31%)oklch(0.321 0.165 270.2)Colors that go with #191f85
Steel Blue, Olive Green 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.
Steel Blue #4682b4
analogousshippedSteel Blue is #191f85's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Olive Green #808000
complementaryOlive Green sits directly opposite #191f85 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Sienna #a0522d
split-complementSienna is a split-complement of #191f85: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Powder Blue #b0e0e6
shippedPowder Blue is paired with #191f85 in two real palettes: Glacier and Frost & Ember, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #191f85: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Sea Green #2e8b57
triadicSea Green completes a triad with #191f85 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Rust #b7410e
triadicRust completes a triad with #191f85 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Blue Violet #8a2be2
analogousBlue Violet is #191f85's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Real palettes that use #191f85
Tints & shades
Harmonies
Contrast
| #191f85 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 13.32:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.58:1 | 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 #191f85 as the background.
Brands using this color
Fonts for this mood
#191f85 reads as cool, vivid, technical. 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 #191f85 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/191f85-9f9cc4-df924e-251f2d-e9edf1?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