# #1665d4

A color — cool, vivid, technical, modern. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#1665d4`
- RGB: rgb(22, 101, 212)
- HSL: hsl(215, 81%, 46%)
- OKLCH: oklch(0.529 0.186 258.7)
- Relative luminance: 0.1423
- Nearest named color: God of Rain (#4466cc, Δ 3.613) — https://brandsweets.com/colors/god-of-rain
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/1665d4

## Tints & shades

- Tints (toward white): #1d71e7, #3480ea, #5091ed, #679fef, #7eaef1, #95bcf4, #accbf6, #c8dcf9, #dfebfc, #f6f9fe
- Shades (toward black): #145dc2, #1254af, #104998, #0e4086, #0c3773, #0a2e61, #08254e, #061a37, #041225, #020912

## Harmonies

- Complementary: #d48516
- Analogous: #16c4d4, #2616d4
- Triadic: #d41665, #65d416
- Split-complementary: #d42616, #c4d416
- Tetradic: #d416c4, #d48516, #16d426

## Colors that go with #1665d4

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #1665d4: softer than #000 and cool enough to feel like part of the same palette. Seen in: Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Starlink (https://brandsweets.com/colors/brands/starlink-com), Disney (https://brandsweets.com/colors/brands/disney-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #1665d4 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Foot Locker (https://brandsweets.com/colors/brands/footlocker-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), Netflix (https://brandsweets.com/colors/brands/netflix), Ulta Beauty (https://brandsweets.com/colors/brands/ulta-com). — https://brandsweets.com/colors/crimson
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #1665d4 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Dyson (https://brandsweets.com/colors/brands/dyson-com). — https://brandsweets.com/colors/sienna
- **Amber** #ffbf00 [pool] — Amber is paired with #1665d4 in 9 real palettes, including NBA's brand system and Wikipedia's brand system, as the lead colour. Seen in: NBA (https://brandsweets.com/colors/brands/nba-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Walmart (https://brandsweets.com/colors/brands/walmart-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 16 real palettes, including Pixar's brand system and Headspace's brand system put Blue beside #1665d4, as the accent. Seen in: Pixar (https://brandsweets.com/colors/brands/pixar-com), Headspace (https://brandsweets.com/colors/brands/headspace-com), BBC (https://brandsweets.com/colors/brands/bbc-com), EA (https://brandsweets.com/colors/brands/ea-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #1665d4: 13 real palettes, including Unilever's brand system and Carrefour's brand system, as the lead colour. Seen in: Unilever (https://brandsweets.com/colors/brands/unilever-com), Carrefour (https://brandsweets.com/colors/brands/carrefour-com), Nokia (https://brandsweets.com/colors/brands/nokia-com), Intel (https://brandsweets.com/colors/brands/intel-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #1665d4: 7 real palettes, including NBA's brand system and Coca-Cola's brand system, as the accent. Seen in: NBA (https://brandsweets.com/colors/brands/nba-com), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Gopro (https://brandsweets.com/colors/brands/gopro-com), Webflow (https://brandsweets.com/colors/brands/webflow-com). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #1665d4: 7 real palettes, including Venmo's brand system and Astro's brand system, as the supporting colour. Seen in: Venmo (https://brandsweets.com/colors/brands/venmo-com), Astro (https://brandsweets.com/colors/brands/astro-build), Elastic (https://brandsweets.com/colors/brands/elastic-co), Deep Water (https://brandsweets.com/palettes/dark#deep-water). — https://brandsweets.com/colors/deepskyblue

## Contrast (WCAG 2.x, as text)

- On white (#ffffff): 5.46:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #1254af (7.21:1)
- On black (#000000): 3.85:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #1d71e7 (4.57:1); AA: background → #ebebeb (4.58:1); AAA: text → #5997ee (7.09:1)

## Brands using this color

- **Fitbit** — secondary #1967d2 (Δ 0.652) — https://brandsweets.com/colors/brands/fitbit-com
- **Postman** — accent #0265d2 (Δ 0.664) — https://brandsweets.com/colors/brands/postman-com
- **HashiCorp** — primary #2264d6 (Δ 0.683) — https://brandsweets.com/colors/brands/hashicorp-com
- **HashiCorp** — accent #2264d6 (Δ 0.683) — https://brandsweets.com/colors/brands/hashicorp-com
- **NBA** — secondary #0268d6 (Δ 0.84) — https://brandsweets.com/colors/brands/nba-com
- **Khan Academy** — accent #0069d6 (Δ 1.054) — https://brandsweets.com/colors/brands/khanacademy-org
- **GitHub** — accent #0969da (Δ 1.293) — https://brandsweets.com/colors/brands/github
- **Loom** — primary #1868db (Δ 1.31) — https://brandsweets.com/colors/brands/loom-com
- **Loom** — secondary #1868db (Δ 1.31) — https://brandsweets.com/colors/brands/loom-com
- **Box** — primary #0061d5 (Δ 1.331) — https://brandsweets.com/colors/brands/box-com
- **Box** — secondary #0061d5 (Δ 1.331) — https://brandsweets.com/colors/brands/box-com
- **Foot Locker** — accent #036ad8 (Δ 1.341) — https://brandsweets.com/colors/brands/footlocker-com
- **Apple** — accent #0066cc (Δ 1.447) — https://brandsweets.com/colors/brands/apple-com
- **Dyson** — accent #0066cc (Δ 1.447) — https://brandsweets.com/colors/brands/dyson-com
- **Unilever** — accent #0066cc (Δ 1.447) — https://brandsweets.com/colors/brands/unilever-com
- **Strava** — accent #0060d0 (Δ 1.682) — https://brandsweets.com/colors/brands/strava-com
- **YouTube** — accent #065fd4 (Δ 1.712) — https://brandsweets.com/colors/brands/youtube-com
- **Philips** — secondary #0b5ed7 (Δ 1.954) — https://brandsweets.com/colors/brands/philips-com

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- modern: https://brandsweets.com/fonts/mood/modern

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/1665d4-9ca8c4-df5d4e-201f2d-e9f0f1?lock=0&style=vibrant
(Humans lock/regenerate in the tool; the URL is the state — read `lock=` back to see what they kept.)

## Connect an agent

Point any MCP client at the BrandSweets colors endpoint for the same engine:

- Endpoint: https://mcp.brandsweets.com/colors/mcp
- Tools: `analyze_color` (e.g. `analyze_color({ color: "#1665d4" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.