Color
#336da3
#336da3rgb(51, 109, 163)hsl(209, 52%, 42%)oklch(0.522 0.105 249.1)Colors that go with #336da3
Charcoal, Crimson and Amber 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 #336da3: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
triadicshippedCrimson completes a triad with #336da3 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Amber #ffbf00
shippedAmber is paired with #336da3 in 7 real palettes, including Lemon Squeezy's brand system and Wired's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Cobalt Blue #0047ab
shippedCobalt Blue is paired with #336da3 in 6 real palettes, including Fintech Trust and Glacier, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Copper #b87333
shippedCopper is paired with #336da3 in 4 real palettes, including Dusk and Notion's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Firebrick #b22222
shippedFirebrick is paired with #336da3 in 4 real palettes, including AT&T's brand system and Wendy's's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Light Sky Blue #87cefa
shippedLight Sky Blue is paired with #336da3 in 4 real palettes, including Sentry's brand system and 1password's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #336da3 in 5 real palettes, including Fintech Trust and Khan Academy's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #336da3
Tints & shades
Harmonies
Contrast
| #336da3 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.44:1 | pass | pass | fail |
|
Aaon black | 3.86:1 | 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 #336da3 as the background.
Brands using this color
Fonts for this mood
#336da3 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 #336da3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/336da3-9cacc4-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