Color
#066dfe
#066dfergb(6, 109, 254)hsl(215, 99%, 51%)oklch(0.576 0.231 260)Colors that go with #066dfe
Charcoal, Crimson and Copper 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 #066dfe: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
triadicshippedCrimson completes a triad with #066dfe — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Copper #b87333
complementaryshippedCopper sits directly opposite #066dfe on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #066dfe in 7 real palettes, including Walmart's brand system and NBA's brand system, as the accent.
Blue #0000ff
shipped13 real palettes, including MongoDB's brand system and EA's brand system put Blue beside #066dfe, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #066dfe: 10 real palettes, including Behance's brand system and Nivea's brand system, as the supporting colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #066dfe: 6 real palettes, including Webflow's brand system and Roblox's brand system, as the accent.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #066dfe: 6 real palettes, including Elastic's brand system and Patreon's brand system, as the supporting colour.
Real palettes that use #066dfe
Tints & shades
Harmonies
Contrast
| #066dfe as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.54:1 | pass | pass | fail |
|
Aaon black | 4.63:1 | pass | 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 #066dfe as the background.
Brands using this color
- Elasticaccent · #0d6efd · Δ0.338
- MongoDBsecondary · #006cfa · Δ0.68
- Squareprimary · #006aff · Δ0.756
- Squareaccent · #006aff · Δ0.756
- Yahooaccent · #0f69ff · Δ0.907
- Behanceprimary · #1769ff · Δ0.923
- Ubisoftaccent · #006ef5 · Δ1.391
- Webflowprimary · #146cf4 · Δ1.517
- WWEaccent · #0166ff · Δ1.654
- EAaccent · #0070f3 · Δ1.822
- Vercelaccent · #0070f3 · Δ1.822
- GEICOsecondary · #026df1 · Δ1.973
Fonts for this mood
#066dfe reads as cool, vivid, technical. 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 #066dfe and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/066dfe-9ca8c4-df5d4e-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