Nearest named color: Slate Gray
#667993
#667993
Nearest named
Slate Gray
Family
Blue
Lightness
57.1%
Chroma
0.046
Hue angle
256.3°
Temperature
Cool
Contrast on white
4.45:1 · AA Large
Contrast on black
4.18:1 · AA Large
Web-safe
#666699
CSS oklch()
57% 0.05 256

#667993 is a muted, cool indigo. On the Color Lab it reads clean and engineered, restrained and easy to live with. It carries a legible label as a UI accent and reproduces cleanly in print.

Palettes built on #667993

Not just a swatch — here's how #667993 works with other colors. Named schemes with #667993 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

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

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

Tech Product Signal · 5 colors

Slate Gray is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Slate Gray.

Vintage Leather Lead · 5 colors

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.

Minimal Editorial Surface · 5 colors

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 Slate Gray carrying the quiet middle.

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Color Lab

How #667993 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 38/100
Cool
Reads cool and recessive — calming, technical, good for trust-led UI.
Softness 55/100
Moderate
Middle-weight — neither delicate nor heavy.
Depth 41/100
Moderate
Mid depth — usable as an accent or a muted ground.
Naturalness 0/100
Very low
Reads engineered rather than organic — synthetic, digital.
Vintage feel 46/100
Moderate
A faint retro warmth without tipping into sepia.
Luxury 47/100
Moderate
Understated — leans refined without going austere.
Brand distinctiveness 18/100
Very low
Quiet and neutral — a supporting tone, not a signature.
UI accent fit 68/100
High
Strong interactive accent — visible and can carry a legible label.
Surface fit 45/100
Moderate
Usable as a tinted surface in measured doses.
Print safety 91/100
Very high
Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #667993

For UI
For branding
For interior
For fashion
People also use #667993 with

UI roles & guardrails

Primary action Too mid-tone for a filled button — darken for the fill. AA Large
Body text Do not use for body copy on light surfaces. Avoid
Large display Fine for headings 24px+ on white. Pass
Background Pair with white text at 4.4:1. Use
Subtle surface Use #E2E4E8 for cards and hover fills. Tint 80
Avoid beside #666A93 — 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 #667993 at work across the surfaces designers actually ship.

Website / UI
Northwind Sign up
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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: #667993;
  --color-base-rgb: 102 121 147;
  --color-base-oklch: oklch(57.1% 0.046 256.3);
  --color-50: #F6F7F9;
  --color-100: #E7EAEE;
  --color-200: #CFD5DE;
  --color-300: #ACB6C3;
  --color-400: #8A97A8;
  --color-500: #6B788A;
  --color-600: #565F6C;
  --color-700: #40464F;
  --color-800: #2C3035;
  --color-900: #1C1E21;
  --color-on-base: #141310;
}