# #10313d

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

## Values

- Hex: `#10313d`
- RGB: rgb(16, 49, 61)
- HSL: hsl(196, 58%, 15%)
- OKLCH: oklch(0.295 0.044 225.3)
- Relative luminance: 0.0264
- Nearest named color: Nordic Noir (#003344, Δ 1.494) — https://brandsweets.com/colors/nordic-noir
- Moods: cool, dark, luxury, bold, modern
- Page: https://brandsweets.com/colors/10313d

## Tints & shades

- Tints (toward white): #194b5d, #226881, #2b82a1, #339cc1, #52afd1, #72beda, #92cde2, #b2dceb, #d7ecf4, #f7fbfd
- Shades (toward black): #0f2d38, #0e2a34, #0d2730, #0c242c, #0b2028, #091a20, #07171c, #061318, #051014, #040d10

## Harmonies

- Complementary: #3c1c10
- Analogous: #103c32, #101a3c
- Triadic: #3c1031, #313c10
- Split-complementary: #3c101a, #3c3210
- Tetradic: #32103c, #3c1c10, #1a3c10

## Colors that go with #10313d

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

- **Crimson** #dc143c [harmony, pool: split] — Crimson is a split-complement of #10313d: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Vodafone (https://brandsweets.com/colors/brands/vodafone-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Svelte (https://brandsweets.com/colors/brands/svelte-dev). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [harmony, pool: analogous] — Denim is #10313d's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: UEFA (https://brandsweets.com/colors/brands/uefa-com), Amazon (https://brandsweets.com/colors/brands/amazon-com), Open House (https://brandsweets.com/palettes/clean#open-house), Campus (https://brandsweets.com/palettes/friendly#campus). — https://brandsweets.com/colors/denim
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #10313d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Olive Grove (https://brandsweets.com/palettes/muted#olive-grove), BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), Harvest (https://brandsweets.com/palettes/warm#harvest). — https://brandsweets.com/colors/sienna
- **Teal** #008080 [harmony, pool: analogous] — Teal is #10313d's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: N26 (https://brandsweets.com/colors/brands/n26-com), Alpine (https://brandsweets.com/palettes/cool#alpine), Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Stanley (https://brandsweets.com/colors/brands/stanley1913-com). — https://brandsweets.com/colors/teal
- **Amber** #ffbf00 [pool] — Amber is paired with #10313d in 10 real palettes, including Beach Hut and McDonald's's brand system, as the supporting colour. Seen in: Beach Hut (https://brandsweets.com/palettes/light#beach-hut), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Google (https://brandsweets.com/colors/brands/google-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 19 real palettes, including Headspace's brand system and Readymag's brand system put Blue beside #10313d, as the accent. Seen in: Headspace (https://brandsweets.com/colors/brands/headspace-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net), Monzo (https://brandsweets.com/colors/brands/monzo-com). — https://brandsweets.com/colors/blue
- **Blush Pink** #e8b4b8 [pool] — 6 real palettes, including Rain Garden and Graphite Mono put Blush Pink beside #10313d, as the accent. Seen in: Rain Garden (https://brandsweets.com/palettes/cool#rain-garden), Graphite Mono (https://brandsweets.com/palettes/neutral#graphite-mono), Blush (https://brandsweets.com/palettes/light#blush), Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding). — https://brandsweets.com/colors/blush-pink
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #10313d: 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): 13.74:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.53:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #2a7e9d (4.57:1); AA: background → #949494 (4.53:1); AAA: text → #36a2c9 (7.17:1); AAA: background → #bababa (7.08:1)

## Brands using this color

- **UEFA** — secondary #1a313c (Δ 1.025) — https://brandsweets.com/colors/brands/uefa-com

## Curated palettes containing it

- **Lido** (summer, vivid, light, playful) — #00a6c7, #ff6b6b, #ffd166, #ffffff, #12303a — Pool blue, watermelon and sun on white — the poolside summer set; the deep teal text keeps it from going juvenile. — tool: https://brandsweets.com/palettes/new/00a6c7-ff6b6b-ffd166-ffffff-12303a — collection: https://brandsweets.com/palettes/summer
- **Still Water** (calm, cool, muted, light) — #5b8a9a, #a9c4cc, #e3d5b8, #f5f8f9, #1e2f36 — Dusty teal and mist with a sand accent — low chroma, low contrast between colours, high contrast for text: the recipe for calm. — tool: https://brandsweets.com/palettes/new/5b8a9a-a9c4cc-e3d5b8-f5f8f9-1e2f36 — collection: https://brandsweets.com/palettes/calm

## Fonts for this mood

- luxury: https://brandsweets.com/fonts/mood/luxury
- bold: https://brandsweets.com/fonts/mood/bold
- 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/10313d-9cb5c4-df4e6e-1f232d-e9f1ef?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: "#10313d" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.