Color
#166bf3
#166bf3rgb(22, 107, 243)hsl(217, 90%, 52%)oklch(0.565 0.218 260.4)Colors that go with #166bf3
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 #166bf3: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
triadicshippedCrimson completes a triad with #166bf3 — 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 #166bf3 in 8 real palettes, including Walmart's brand system and NBA's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Blue #0000ff
shippedBlue is paired with #166bf3 in 13 real palettes, including MongoDB's brand system and EA's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Cobalt Blue #0047ab
shippedCobalt Blue is paired with #166bf3 in 10 real palettes, including Behance's brand system and Carrefour's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Cornflower Blue #6495ed
shippedCornflower Blue is paired with #166bf3 in 6 real palettes, including Webflow's brand system and Roblox's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Deep Sky Blue #00bfff
shippedDeep Sky Blue is paired with #166bf3 in 6 real palettes, including Elastic's brand system and Patreon's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Firebrick #b22222
shippedFirebrick is paired with #166bf3 in 4 real palettes, including Bose's brand system and Nissan's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #166bf3
Tints & shades
Harmonies
Contrast
| #166bf3 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.74:1 | pass | pass | fail |
|
Aaon black | 4.43:1 | 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 #166bf3 as the background.
Brands using this color
- Webflowprimary · #146cf4 · Δ0.27
- GEICOsecondary · #026df1 · Δ0.685
- Ubisoftaccent · #006ef5 · Δ0.801
- MongoDBsecondary · #006cfa · Δ1.131
- EAaccent · #0070f3 · Δ1.182
- Vercelaccent · #0070f3 · Δ1.182
- BBCsecondary · #0071f1 · Δ1.465
- Rotten Tomatoessecondary · #326af6 · Δ1.588
- Elasticaccent · #0d6efd · Δ1.629
- Wayfairsecondary · #1364f1 · Δ1.717
- Behanceprimary · #1769ff · Δ1.872
- Squareprimary · #006aff · Δ1.876
- Squareaccent · #006aff · Δ1.876
- Yahooaccent · #0f69ff · Δ1.881
- Fivetran blueprimary · #346cec · Δ1.988
Fonts for this mood
#166bf3 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 #166bf3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/166bf3-9ca7c4-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