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
#304e7e
#304e7e
hex
#304e7ergb
rgb(48, 78, 126)hsl
hsl(217, 45%, 34%)oklch
oklch(0.425 0.088 259.4)Closest name: Assassin (#2d4f83)Relative luminance 0.0758
Colors that go with #304e7e
Sea Green, Blue and Cadet 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.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #304e7e — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Blue #0000ff
shipped7 real palettes, including CVS's brand system and Tesco's brand system put Blue beside #304e7e, as the supporting colour.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #304e7e: 4 real palettes, including Dusk and Open House, as the supporting colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #304e7e: 4 real palettes, including Blue Mono and Blizzard's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #304e7e in 13 real palettes, including Walgreens's brand system and Codecademy's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #304e7e: 16 real palettes, including HP's brand system and Unilever's brand system, as the accent.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #304e7e: 4 real palettes, including Fireside and Campbell's's brand system, as the lead colour.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #304e7e: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #304e7e
Tints & shades
Harmonies
Contrast
| #304e7e as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 8.34:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.52:1 | 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 #304e7e 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
#304e7e reads as cool, modern. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #304e7e
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 #304e7e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/304e7e-9ca7c4-df624e-201f2d-e9f0f1?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