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
#12399b
#12399b
hex
#12399brgb
rgb(18, 57, 155)hsl
hsl(223, 79%, 34%)oklch
oklch(0.388 0.165 263.8)Closest name: Depths of Night (#2c319b)Relative luminance 0.0542
Colors that go with #12399b
Charcoal, Steel Blue and 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 #12399b: softer than #000 and cool enough to feel like part of the same palette.
Steel Blue #4682b4
analogousshippedSteel Blue is #12399b's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Blue #0000ff
shipped6 real palettes, including Procter & Gamble's brand system and CVS's brand system put Blue beside #12399b, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #12399b in 11 real palettes, including Walgreens's brand system and Casper Sleep's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #12399b: 14 real palettes, including Warbyparker's brand system and Unilever's brand system, as the accent.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #12399b: 4 real palettes, including 3M's brand system and MLB's brand system, as the supporting colour.
Midnight Blue #191970
shipped15 real palettes, including Fintech Trust and Blue Mono put Midnight Blue beside #12399b, as that palette's text colour.
Orange Red #ff4500
shippedOrange Red is paired with #12399b in 4 real palettes, including NASA's brand system and Tide's brand system, as the supporting colour.
Real palettes that use #12399b
Tints & shades
Harmonies
Contrast
| #12399b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 10.08:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.08:1 | 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 #12399b as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#12399b reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #12399b
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 #12399b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/12399b-9ca3c4-df704e-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