Color
#306cb0
#306cb0rgb(48, 108, 176)hsl(212, 57%, 44%)oklch(0.526 0.124 253.6)Colors that go with #306cb0
Charcoal, Crimson and Medium Sea Green 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 #306cb0: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
triadicshippedCrimson completes a triad with #306cb0 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #306cb0 in 4 real palettes, including Fintech Trust and Console Light, as the accent — a combination designers have actually shipped, not a computed rotation.
Midnight Blue #191970
shippedMidnight Blue is paired with #306cb0 in 6 real palettes, including Fintech Trust and Open House, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Orange Red #ff4500
shippedOrange Red is paired with #306cb0 in 4 real palettes, including PlanetScale's brand system and Strava's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Taupe #483c32
shippedTaupe is paired with #306cb0 in 8 real palettes, including Astro's brand system and Dusk, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Sienna #a0522d
complementarySienna sits directly opposite #306cb0 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Cadet Blue #5f9ea0
shippedCadet Blue is paired with #306cb0 in 3 real palettes, including Open House and Alpine, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #306cb0
Tints & shades
Harmonies
Contrast
| #306cb0 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.39:1 | pass | pass | fail |
|
Aaon black | 3.9:1 | fail | pass | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #306cb0 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#306cb0 reads as cool, modern. 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 #306cb0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/306cb0-9caac4-df564e-1f202d-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