# #4d5c75

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

## Values

- Hex: `#4d5c75`
- RGB: rgb(77, 92, 117)
- HSL: hsl(218, 21%, 38%)
- OKLCH: oklch(0.472 0.045 260.5)
- Relative luminance: 0.1052
- Nearest named color: Deep Indigo (#4c567a, Δ 2.227) — https://brandsweets.com/colors/deep-indigo
- Moods: cool, muted
- Page: https://brandsweets.com/colors/4d5c75

## Tints & shades

- Tints (toward white): #596a88, #65789a, #7789a6, #8a99b2, #9ca9bf, #afb9cb, #c1c9d7, #d4d9e3, #e6e9ef, #f9fafb
- Shades (toward black): #47546c, #3e4b60, #384356, #303a4a, #2a3341, #242b38, #1c222b, #161a22, #0e1116, #080a0c

## Harmonies

- Complementary: #75664d
- Analogous: #4d7075, #524d75
- Triadic: #754d5b, #5b754d
- Split-complementary: #75524d, #70754d
- Tetradic: #754d70, #75664d, #4d7552

## Colors that go with #4d5c75

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

- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #4d5c75 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Subaru (https://brandsweets.com/colors/brands/subaru-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Netflix (https://brandsweets.com/colors/brands/netflix). — https://brandsweets.com/colors/seagreen
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #4d5c75 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: BrandSweets (https://brandsweets.com/colors/brands/brandsweets). — https://brandsweets.com/colors/sienna
- **Blue** #0000ff [pool] — 6 real palettes, including Activision's brand system and Tesco's brand system put Blue beside #4d5c75, as the accent. Seen in: Activision (https://brandsweets.com/colors/brands/activision-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Warp (https://brandsweets.com/colors/brands/warp-dev). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #4d5c75: 4 real palettes, including Fintech Trust and Ink & Paper, as the lead colour. Seen in: Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Ink & Paper (https://brandsweets.com/palettes/minimal#ink-and-paper), Unilever (https://brandsweets.com/colors/brands/unilever-com), Glacier (https://brandsweets.com/palettes/cool#glacier). — https://brandsweets.com/colors/cobalt
- **Copper** #b87333 [pool] — Designers have shipped Copper with #4d5c75: 4 real palettes, including Dusk and Desert Road, as the accent. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Desert Road (https://brandsweets.com/palettes/warm#desert-road), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen), Riverbed (https://brandsweets.com/palettes/muted#riverbed). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #4d5c75 in 13 real palettes, including Codecademy's brand system and Gemstone, as the accent. Seen in: Codecademy (https://brandsweets.com/colors/brands/codecademy-com), Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Wendy's (https://brandsweets.com/colors/brands/wendys-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #4d5c75: 4 real palettes, including Lamborghini's brand system and Warp's brand system, as the supporting colour. Seen in: Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Venmo (https://brandsweets.com/colors/brands/venmo-com), Deep Water (https://brandsweets.com/palettes/dark#deep-water). — https://brandsweets.com/colors/deepskyblue
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #4d5c75: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy. — https://brandsweets.com/colors/whitesmoke

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

- On white (#ffffff): 6.77:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #4b5972 (7.07:1)
- On black (#000000): 3.1:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #637697 (4.57:1); AA: background → #d4d4d4 (4.57:1); AAA: text → #8796b0 (7.02:1)

## Brands using this color

- **Stripe** — secondary #50617a (Δ 1.639) — https://brandsweets.com/colors/brands/stripe

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/4d5c75-9ca6c4-df644e-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: "#4d5c75" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.