Nearest named color: Dark Slate Gray
#37564F
#37564F
Nearest named
Dark Slate Gray
Family
Green
Lightness
42.7%
Chroma
0.039
Hue angle
178.6°
Temperature
Cool
Contrast on white
8.06:1 · AAA
Contrast on black
2.31:1 · Fail
Web-safe
#336666
CSS oklch()
43% 0.04 179

#37564F is a muted, temperate cyan. On the Color Lab it reads clean and engineered, quietly premium. It reproduces cleanly in print.

Palettes built on #37564F

Not just a swatch — here's how #37564F works with other colors. Named schemes with #37564F in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Dark Slate Gray opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Nordic Calm Accent · 5 colors

Dark Slate Gray keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Vintage Leather Lead · 5 colors

Dark Slate Gray plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Modern Café Dominant · 5 colors

Dark Slate Gray anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Minimal Editorial Surface · 5 colors

Dark Slate Gray is the single accent in this high-contrast editorial system — set on near-white paper against near-black ink, with a warm grey and a desaturated tint of Dark Slate Gray carrying the quiet middle.

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Color Lab

How #37564F actually behaves in design work — read from its OKLCH lightness, chroma and hue, not just its raw numbers. Ten signals to help you decide where this color earns its place.

Warmth 43/100
Neutral
Balanced temperature — flexible, sits between warm and cool schemes.
Softness 43/100
Moderate
Middle-weight — neither delicate nor heavy.
Depth 54/100
Moderate
Mid depth — usable as an accent or a muted ground.
Naturalness 19/100
Very low
Reads engineered rather than organic — synthetic, digital.
Vintage feel 40/100
Moderate
A faint retro warmth without tipping into sepia.
Luxury 58/100
Moderate
Restrained and premium — deep, quiet, high-end packaging and fashion.
Brand distinctiveness 15/100
Very low
Quiet and neutral — a supporting tone, not a signature.
UI accent fit 54/100
Moderate
Workable accent with care around contrast.
Surface fit 46/100
Moderate
Usable as a tinted surface in measured doses.
Print safety 92/100
Very high
Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #37564F

For UI
For branding
For interior
For fashion
People also use #37564F with

UI roles & guardrails

Primary action Safe as a filled button with white label. AAA
Body text Passes on white at 16px and above. Pass
Large display Fine for headings 24px+ on white. Pass
Background Pair with white text at 8.1:1. Use
Subtle surface Use #D4E0DD for cards and hover fills. Tint 80
Avoid beside #385457 — the hue gap is too small to read as intentional. Clash

In real applications

Not a swatch to memorise — a color to build with. Here is #37564F at work across the surfaces designers actually ship.

Website / UI
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Dashboard
Revenue
$48.2k ▲ 12%
Brand
AVELINE
Studio
Poster
Nov 14 · 8PM
NIGHT
MARKET
Packaging
BLOOM
Botanical Wash
250 ml
Interior

Scales

ShadesBase darkened in 10% steps
TintsBase lifted toward white
TonesSaturation removed, lightness held
Monochromatic scaleDesign-system ready, 50–900

Every model

Export

:root {
  --color-base: #37564F;
  --color-base-rgb: 55 86 79;
  --color-base-oklch: oklch(42.7% 0.039 178.6);
  --color-50: #F6F9F8;
  --color-100: #E6EFED;
  --color-200: #CDDFDB;
  --color-300: #A9C6BF;
  --color-400: #87ABA3;
  --color-500: #678E85;
  --color-600: #536F68;
  --color-700: #3F504C;
  --color-800: #2B3633;
  --color-900: #1C2220;
  --color-on-base: #FFFFFF;
}