Color
#2c66c3
#2c66c3rgb(44, 102, 195)hsl(217, 63%, 47%)oklch(0.524 0.158 259.6)Colors that go with #2c66c3
Charcoal, Firebrick and Sienna 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 #2c66c3: softer than #000 and cool enough to feel like part of the same palette.
Firebrick #b22222
triadicshippedFirebrick completes a triad with #2c66c3 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Sienna #a0522d
complementaryshippedSienna sits directly opposite #2c66c3 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 #2c66c3 in 10 real palettes, including Wikipedia's brand system and Warner Bros.'s brand system, as the accent.
Blue #0000ff
shipped16 real palettes, including Pixar's brand system and Activision's brand system put Blue beside #2c66c3, as the accent.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #2c66c3: 7 real palettes, including Coca-Cola's brand system and NBA's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #2c66c3 in 19 real palettes, including Netflix's brand system and Ulta Beauty's brand system, as the lead colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #2c66c3: 7 real palettes, including Venmo's brand system and Astro's brand system, as the supporting colour.
Real palettes that use #2c66c3
Tints & shades
Harmonies
Contrast
| #2c66c3 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.53:1 | pass | pass | fail |
|
Aaon black | 3.8:1 | 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 #2c66c3 as the background.
Brands using this color
- Bingaccent · #3366bb · Δ1.335
- Wikipediasecondary · #3366cc · Δ1.554
- Linkedinsecondary · #0a66c2 · Δ1.663
- Campbell'saccent · #3860be · Δ1.767
- Coca-Colaaccent · #3860be · Δ1.767
- Guinnessaccent · #3860be · Δ1.767
- Heinzaccent · #3860be · Δ1.767
- Hingeaccent · #3860be · Δ1.767
- Jack Daniel'sprimary · #3860be · Δ1.767
- L'Oréalaccent · #3860be · Δ1.767
- Maybellineaccent · #3860be · Δ1.767
- Netflixaccent · #3860be · Δ1.767
- Nikonsecondary · #3860be · Δ1.767
- Paramount+primary · #3860be · Δ1.767
- Pixarsecondary · #3860be · Δ1.767
- Starlinksecondary · #3860be · Δ1.767
- Ulta Beautysecondary · #3860be · Δ1.767
- Victoria's Secretaccent · #3860be · Δ1.767
- Warner Bros.secondary · #3860be · Δ1.767
Fonts for this mood
#2c66c3 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 #2c66c3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/2c66c3-9ca7c4-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