First Snow
Open in tool →Ice blue on snow-white with a deep navy — the quietest winter palette; everything is a tint of one cold hue.
Color
#1b4e7e
#1b4e7e
hex
#1b4e7ergb
rgb(27, 78, 126)hsl
hsl(209, 65%, 30%)oklch
oklch(0.415 0.097 250.3)Closest name: Assassin (#2d4f83)Relative luminance 0.0719
Colors that go with #1b4e7e
Crimson, Cadet Blue and Denim 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 #1b4e7e — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Cadet Blue #5f9ea0
shippedCadet Blue is paired with #1b4e7e in 4 real palettes, including Dusk and Open House, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #1b4e7e in 6 real palettes, including Hinge's brand system and Jack Daniel's's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Goldenrod #daa520
shippedGoldenrod is paired with #1b4e7e in 4 real palettes, including Sapphire & Gold and Open House, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Midnight Blue #191970
shippedMidnight Blue is paired with #1b4e7e in 11 real palettes, including First Snow and Microsoft's brand system, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Orange Red #ff4500
shippedOrange Red is paired with #1b4e7e in 4 real palettes, including Tide's brand system and HubSpot's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Powder Blue #b0e0e6
shippedPowder Blue is paired with #1b4e7e in 6 real palettes, including First Snow and Glacier, as the accent — a combination designers have actually shipped, not a computed rotation.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #1b4e7e: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #1b4e7e
Tints & shades
Harmonies
Contrast
| #1b4e7e as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 8.61:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.44:1 | 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 #1b4e7e 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
Fonts for this mood
#1b4e7e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #1b4e7e
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 #1b4e7e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/1b4e7e-9cacc4-df4e4e-1f212d-e9f1f1?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