# #1661da

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

## Values

- Hex: `#1661da`
- RGB: rgb(22, 97, 218)
- HSL: hsl(217, 82%, 47%)
- OKLCH: oklch(0.525 0.199 260.3)
- Relative luminance: 0.1378
- Nearest named color: Bluetiful (#3c69e7, Δ 4.138) — https://brandsweets.com/colors/bluetiful
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/1661da

## Tints & shades

- Tints (toward white): #206de9, #377ceb, #4f8cee, #669bf0, #82adf3, #99bcf5, #b0cbf7, #c7dbf9, #dfeafc, #f6f9fe
- Shades (toward black): #1459c8, #114eb0, #10469e, #0e3e8b, #0c3679, #0a2b61, #08234f, #061b3c, #041025, #020813

## Harmonies

- Complementary: #da8f16
- Analogous: #16c3da, #2d16da
- Triadic: #da1661, #61da16
- Split-complementary: #da2d16, #c3da16
- Tetradic: #da16c3, #da8f16, #16da2d

## Colors that go with #1661da

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 #1661da: softer than #000 and cool enough to feel like part of the same palette. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), UEFA (https://brandsweets.com/colors/brands/uefa-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #1661da — 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), Chase (https://brandsweets.com/colors/brands/chase-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), Netflix (https://brandsweets.com/colors/brands/netflix). — https://brandsweets.com/colors/crimson
- **Amber** #ffbf00 [pool] — Amber is paired with #1661da 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] — 14 real palettes, including Headspace's brand system and Pixar's brand system put Blue beside #1661da, as the accent. Seen in: Headspace (https://brandsweets.com/colors/brands/headspace-com), Pixar (https://brandsweets.com/colors/brands/pixar-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 #1661da: 14 real palettes, including Unilever's brand system and Nokia's brand system, as the lead colour. Seen in: Unilever (https://brandsweets.com/colors/brands/unilever-com), Nokia (https://brandsweets.com/colors/brands/nokia-com), NHL (https://brandsweets.com/colors/brands/nhl-com), Carrefour (https://brandsweets.com/colors/brands/carrefour-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #1661da: 8 real palettes, including NBA's brand system and Gopro's brand system, as the accent. Seen in: NBA (https://brandsweets.com/colors/brands/nba-com), Gopro (https://brandsweets.com/colors/brands/gopro-com), Webflow (https://brandsweets.com/colors/brands/webflow-com), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #1661da: 8 real palettes, including Elastic's brand system and Venmo's brand system, as the supporting colour. Seen in: Elastic (https://brandsweets.com/colors/brands/elastic-co), Venmo (https://brandsweets.com/colors/brands/venmo-com), Astro (https://brandsweets.com/colors/brands/astro-build), Calm (https://brandsweets.com/colors/brands/calm-com). — https://brandsweets.com/colors/deepskyblue
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #1661da: 8 real palettes, including HashiCorp's brand system and Apple's brand system, as the supporting colour. Seen in: HashiCorp (https://brandsweets.com/colors/brands/hashicorp-com), Apple (https://brandsweets.com/colors/brands/apple-com), ASUS (https://brandsweets.com/colors/brands/asus-com), Coursera (https://brandsweets.com/colors/brands/coursera-org). — https://brandsweets.com/colors/dodgerblue

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

- On white (#ffffff): 5.59:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #1252ba (7.14:1)
- On black (#000000): 3.76:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #2570e9 (4.57:1); AA: background → #e8e8e8 (4.56:1); AAA: text → #5d95ef (7.01:1)

## Brands using this color

- **Philips** — secondary #0b5ed7 (Δ 1.03) — https://brandsweets.com/colors/brands/philips-com
- **Box** — primary #0061d5 (Δ 1.037) — https://brandsweets.com/colors/brands/box-com
- **Box** — secondary #0061d5 (Δ 1.037) — https://brandsweets.com/colors/brands/box-com
- **HashiCorp** — primary #2264d6 (Δ 1.225) — https://brandsweets.com/colors/brands/hashicorp-com
- **HashiCorp** — accent #2264d6 (Δ 1.225) — https://brandsweets.com/colors/brands/hashicorp-com
- **YouTube** — accent #065fd4 (Δ 1.239) — https://brandsweets.com/colors/brands/youtube-com
- **1password** — accent #145fe4 (Δ 1.621) — https://brandsweets.com/colors/brands/1password-com
- **Postman** — accent #0265d2 (Δ 1.676) — https://brandsweets.com/colors/brands/postman-com
- **Strava** — accent #0060d0 (Δ 1.763) — https://brandsweets.com/colors/brands/strava-com
- **Loom** — primary #1868db (Δ 1.779) — https://brandsweets.com/colors/brands/loom-com
- **Loom** — secondary #1868db (Δ 1.779) — https://brandsweets.com/colors/brands/loom-com
- **NBA** — secondary #0268d6 (Δ 1.861) — https://brandsweets.com/colors/brands/nba-com
- **GitHub** — accent #0969da (Δ 1.947) — https://brandsweets.com/colors/brands/github
- **Square** — secondary #005ad9 (Δ 1.994) — https://brandsweets.com/colors/brands/squareup-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/1661da-9ca7c4-df624e-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: "#1661da" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.