# #4b6172

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

## Values

- Hex: `#4b6172`
- RGB: rgb(75, 97, 114)
- HSL: hsl(206, 21%, 37%)
- OKLCH: oklch(0.481 0.038 241.8)
- Relative luminance: 0.1126
- Nearest named color: Admiral Blue (#50647f, Δ 2.277) — https://brandsweets.com/colors/admiral-blue
- Moods: cool, muted
- Page: https://brandsweets.com/colors/4b6172

## Tints & shades

- Tints (toward white): #577185, #638097, #748fa4, #879eb0, #9cb0bf, #afbfcb, #c1cdd7, #d4dce3, #e6ebef, #f9fafb
- Shades (toward black): #445969, #3c4f5d, #364753, #303f4a, #2a3741, #222d34, #1c252b, #161d22, #0e1216, #080a0c

## Harmonies

- Complementary: #725c4b
- Analogous: #4b7270, #4b4d72
- Triadic: #724b61, #61724b
- Split-complementary: #724b4d, #72704b
- Tetradic: #704b72, #725c4b, #4d724b

## Colors that go with #4b6172

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 #4b6172: softer than #000 and cool enough to feel like part of the same palette. Seen in: Harbour (https://brandsweets.com/palettes/cool#harbour), Pampers (https://brandsweets.com/colors/brands/pampers-com), Gusto (https://brandsweets.com/colors/brands/gusto-com), Campus (https://brandsweets.com/palettes/friendly#campus). — https://brandsweets.com/colors/charcoal
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #4b6172 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), Olive Grove (https://brandsweets.com/palettes/muted#olive-grove). — https://brandsweets.com/colors/sienna
- **Blue** #0000ff [pool] — 5 real palettes, including Warp's brand system and Activision's brand system put Blue beside #4b6172, as the supporting colour. Seen in: Warp (https://brandsweets.com/colors/brands/warp-dev), Activision (https://brandsweets.com/colors/brands/activision-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), Rolex (https://brandsweets.com/colors/brands/rolex-com). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #4b6172: 4 real palettes, including Dusk and Open House, as the supporting colour. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Open House (https://brandsweets.com/palettes/clean#open-house), Alpine (https://brandsweets.com/palettes/cool#alpine), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine). — https://brandsweets.com/colors/cadetblue
- **Champagne** #f7e7ce [pool] — 4 real palettes, including Darkroom and BrandSweets's brand system put Champagne beside #4b6172, as the surface under it. Seen in: Darkroom (https://brandsweets.com/palettes/muted#darkroom), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar). — https://brandsweets.com/colors/champagne
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #4b6172: 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), Glacier (https://brandsweets.com/palettes/cool#glacier), Unilever (https://brandsweets.com/colors/brands/unilever-com). — https://brandsweets.com/colors/cobalt
- **Copper** #b87333 [pool] — Designers have shipped Copper with #4b6172: 4 real palettes, including Desert Road and Dusk, as the lead colour. Seen in: Desert Road (https://brandsweets.com/palettes/warm#desert-road), Dusk (https://brandsweets.com/palettes/cool#dusk), 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 #4b6172 in 10 real palettes, including Gemstone and Codecademy's brand system, as the accent. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Codecademy (https://brandsweets.com/colors/brands/codecademy-com), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Wendy's (https://brandsweets.com/colors/brands/wendys-com). — https://brandsweets.com/colors/crimson

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

- On white (#ffffff): 6.46:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #445969 (7.29:1)
- On black (#000000): 3.25:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #5d798e (4.59:1); AA: background → #d9d9d9 (4.57:1); AAA: text → #8099ac (7.07:1)

## Brands using this color

- **Stripe** — secondary #50617a (Δ 1.547) — https://brandsweets.com/colors/brands/stripe
- **GitHub** — textMuted #57606a (Δ 1.945) — https://brandsweets.com/colors/brands/github
- **Lufthansa** — secondary #52627c (Δ 1.954) — https://brandsweets.com/colors/brands/lufthansa-com

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/4b6172-9caec4-df4e56-1f212d-e9f1f1?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: "#4b6172" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.