Fintech Trust
Open in tool →Navy signals custody and stability; the green accent is money moving the right way. No red anywhere except errors.
Color
#183e91
#183e91
hex
#183e91rgb
rgb(24, 62, 145)hsl
hsl(221, 72%, 33%)oklch
oklch(0.391 0.144 263)Closest name: Cascade Twilight (#234893)Relative luminance 0.0568
Colors that go with #183e91
Midnight Blue, Royal Blue 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.
Midnight Blue #191970
shippedMidnight Blue is paired with #183e91 in 4 real palettes, including Fintech Trust and Blue Mono, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Royal Blue #4169e1
shippedRoyal Blue is paired with #183e91 in 4 real palettes, including Discord's brand system and Behance's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Steel Blue #4682b4
analogousshippedSteel Blue is #183e91'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 #183e91 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Crimson #dc143c
shippedCrimson is paired with #183e91 in 3 real palettes, including Behance's brand system and Frost & Ember, as the accent — a combination designers have actually shipped, not a computed rotation.
Powder Blue #b0e0e6
shippedPowder Blue is paired with #183e91 in 3 real palettes, including Glacier and First Snow, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Sienna #a0522d
split-complementSienna is a split-complement of #183e91: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #183e91: softer than #000 and cool enough to feel like part of the same palette.
Real palettes that use #183e91
Tints & shades
Harmonies
Contrast
| #183e91 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 9.83:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.14:1 | 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 #183e91 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
Glacier
Open in tool →Three blues from ice to deep water on a pale surface — a monochromatic winter set with real depth.
Sapphire & Gold
Open in tool →Deep sapphire and gold with a teal — old-money jewel tones on an ivory ground; heraldic without a crest.
Fonts for this mood
#183e91 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #183e91
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #183e91 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/183e91-9ca4c4-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