# #455a63

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

## Values

- Hex: `#455a63`
- RGB: rgb(69, 90, 99)
- HSL: hsl(198, 18%, 33%)
- OKLCH: oklch(0.454 0.03 226)
- Relative luminance: 0.0948
- Nearest named color: Arctic Nights (#345c61, Δ 2.169) — https://brandsweets.com/colors/arctic-nights
- Moods: cool, muted
- Page: https://brandsweets.com/colors/455a63

## Tints & shades

- Tints (toward white): #546d78, #607e8a, #72909d, #849ea9, #99afb8, #abbdc4, #c0cdd3, #d2dce0, #e7ecee, #f9fafb
- Shades (toward black): #3f525a, #384a51, #324248, #2c393f, #283439, #212c30, #1b2427, #151b1e, #0f1315, #080b0c

## Harmonies

- Complementary: #634e45
- Analogous: #45635d, #454b63
- Triadic: #63455a, #5a6345
- Split-complementary: #63454b, #635d45
- Tetradic: #5d4563, #634e45, #4b6345

## Colors that go with #455a63

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

- **Blue** #0000ff [pool] — 6 real palettes, including Warp's brand system and Jeep's brand system put Blue beside #455a63, as the supporting colour. Seen in: Warp (https://brandsweets.com/colors/brands/warp-dev), Jeep (https://brandsweets.com/colors/brands/jeep-com), Rolex (https://brandsweets.com/colors/brands/rolex-com), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com). — https://brandsweets.com/colors/blue
- **Blush Pink** #e8b4b8 [pool] — 4 real palettes, including Nursery and Blush put Blush Pink beside #455a63, as the lead colour. Seen in: Nursery (https://brandsweets.com/palettes/light#nursery), Blush (https://brandsweets.com/palettes/light#blush), Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding), Graphite Mono (https://brandsweets.com/palettes/neutral#graphite-mono). — https://brandsweets.com/colors/blush-pink
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #455a63: 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
- **Copper** #b87333 [pool] — Designers have shipped Copper with #455a63: 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 #455a63 in 5 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), Wendy's (https://brandsweets.com/colors/brands/wendys-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com). — https://brandsweets.com/colors/crimson
- **Dark Goldenrod** #b8860b [pool] — 4 real palettes, including Puma's brand system and Rolex's brand system put Dark Goldenrod beside #455a63, as the supporting colour. Seen in: Puma (https://brandsweets.com/colors/brands/puma-com), Rolex (https://brandsweets.com/colors/brands/rolex-com), Cider (https://brandsweets.com/palettes/warm#cider), Greige (https://brandsweets.com/palettes/neutral#greige). — https://brandsweets.com/colors/darkgoldenrod
- **Denim** #1560bd [pool] — Designers have shipped Denim with #455a63: 8 real palettes, including HP's brand system and The New York Times's brand system, as the accent. Seen in: HP (https://brandsweets.com/colors/brands/hp-com), The New York Times (https://brandsweets.com/colors/brands/nytimes-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/denim
- **White Smoke** #f5f5f5 [role] — White Smoke is the near-white surface #455a63 was made for — maximum legibility with no colour cast to argue with. — https://brandsweets.com/colors/whitesmoke

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

- On white (#ffffff): 7.25:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.9:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #5e7b87 (4.66:1); AA: background → #cccccc (4.52:1); AAA: text → #819ca7 (7.25:1); AAA: background → #fcfcfc (7.07:1)

## Curated palettes containing it

- **Darkroom** (vintage, muted, warm, editorial) — #7a4b3a, #b89b72, #3f5a5a, #f3ead8, #2c231c — Sepia, faded ochre and a teal shadow on aged paper — the photograph-in-a-drawer palette, tuned so it still passes AA. — tool: https://brandsweets.com/palettes/new/7a4b3a-b89b72-3f5a5a-f3ead8-2c231c — collection: https://brandsweets.com/palettes/vintage

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/455a63-9cb3c4-df4e69-1f232d-e9f1f0?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: "#455a63" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.