# #3a5c8d

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

## Values

- Hex: `#3a5c8d`
- RGB: rgb(58, 92, 141)
- HSL: hsl(215, 42%, 39%)
- OKLCH: oklch(0.472 0.089 257.5)
- Relative luminance: 0.1048
- Nearest named color: Dusk (#4e5481, Δ 3.397) — https://brandsweets.com/colors/dusk
- Moods: cool, modern
- Page: https://brandsweets.com/colors/3a5c8d

## Tints & shades

- Tints (toward white): #436ba3, #4e79b7, #638abf, #799ac8, #8faad1, #a1b8d9, #b7c8e1, #ccd9ea, #e2e9f3, #f8fafc
- Shades (toward black): #355582, #2f4c74, #2b4569, #253b5b, #213450, #1b2b41, #162436, #101a28, #0c131d, #06090e

## Harmonies

- Complementary: #8d6a3a
- Analogous: #3a868d, #413a8d
- Triadic: #8d3a5c, #5c8d3a
- Split-complementary: #8d413a, #868d3a
- Tetradic: #8d3a86, #8d6a3a, #3a8d41

## Colors that go with #3a5c8d

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 #3a5c8d: softer than #000 and cool enough to feel like part of the same palette. Seen in: Harbour (https://brandsweets.com/palettes/cool#harbour), Amazon (https://brandsweets.com/colors/brands/amazon-com), Hasbro (https://brandsweets.com/colors/brands/hasbro-com), Hinge (https://brandsweets.com/colors/brands/hinge-co). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #3a5c8d — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Netflix (https://brandsweets.com/colors/brands/netflix), Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com). — https://brandsweets.com/colors/seagreen
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #3a5c8d 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 #3a5c8d in 6 real palettes, including McDonald's's brand system and Warner Bros.'s brand system, as the lead colour. Seen in: McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 6 real palettes, including Tesco's brand system and Activision's brand system put Blue beside #3a5c8d, as the supporting colour. Seen in: Tesco (https://brandsweets.com/colors/brands/tesco-com), Activision (https://brandsweets.com/colors/brands/activision-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Pixar (https://brandsweets.com/colors/brands/pixar-com). — https://brandsweets.com/colors/blue
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #3a5c8d: 4 real palettes, including Coca-Cola's brand system and Gopro's brand system, as the supporting colour. Seen in: Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Gopro (https://brandsweets.com/colors/brands/gopro-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), NBA (https://brandsweets.com/colors/brands/nba-com). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #3a5c8d in 18 real palettes, including Costco's brand system and Walgreens's brand system, as the lead colour. Seen in: Costco (https://brandsweets.com/colors/brands/costco-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Target : Expect More. Pay Less. (https://brandsweets.com/colors/brands/target-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #3a5c8d: 4 real palettes, including Venmo's brand system and Deep Water, as the supporting colour. Seen in: Venmo (https://brandsweets.com/colors/brands/venmo-com), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com), Astro (https://brandsweets.com/colors/brands/astro-build). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 6.78:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #385a8a (7.01:1)
- On black (#000000): 3.1:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #4a77b5 (4.6:1); AA: background → #d4d4d4 (4.58:1); AAA: text → #7597c7 (7.01:1)

## Brands using this color

- **FIFA** — secondary #326295 (Δ 1.957) — https://brandsweets.com/colors/brands/fifa-com

## Fonts for this mood

- 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/3a5c8d-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: "#3a5c8d" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.