What color is #256166?

#256166 is a dark cyan. In RGB it is rgb(37, 97, 102), and in HSL hsl(185, 47%, 27%).

Is #256166 accessible as text?

On white, #256166 has a contrast ratio of 7.05:1 (passes WCAG AA for body text); on black it is 2.98:1 (fails). For text placed on #256166, use white for the best readability.

What is the closest Tailwind color to #256166?

The nearest Tailwind CSS token is teal-800 (#005F5A).

What colors go well with #256166?

#256166 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #652A24. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #256166 below.

Is #256166 good for buttons?

#256166 works well for buttons and highlights, but use white text on #256166 — black text only reaches 2.98:1, below the 4.5:1 needed for normal-size labels.

Is #256166 the same as CSS darkslategray?

No — #256166 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#256166 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #256166

Not just a swatch — here's how #256166 works with other colors. Named schemes with #256166 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #256166 Accent #A6C4BE Surface #DFDABE Secondary #9AA0A0 Anchor #1D3549

Feldgrau 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

Accent #256166 Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 Anchor #2E3236

Feldgrau 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

Signal #256166 Surface #14161A Highlight #F4F6F8 Secondary #596771 Accent #508388

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

Vintage Leather Lead · 5 colors

Lead #256166 Secondary #715017 Surface #E3DCC0 Accent #395143 Anchor #552340

Feldgrau 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

Surface #F6F4EF Accent #256166 Secondary #718385 Support #979286 Ink #16140F

Feldgrau 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 Feldgrau carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #256166 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 34/100

Cool

Reads cool and recessive — calming, technical, good for trust-led UI.

Softness 43/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 53/100

Moderate

Mid depth — usable as an accent or a muted ground.

Naturalness 6/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 46/100

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 24/100

Low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 71/100

High

Strong interactive accent — visible and can carry a legible label.

Surface fit 37/100

Low

Usable as a tinted surface in measured doses.

Print safety 84/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #256166

For UI

For branding

For interior

For fashion

People also use #256166 with

Sea Green Yale Blue Wine Red Platinum Dark Slate Gray

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 7.0:1. Use

Subtle surface Use #CDE4E6 for cards and hover fills. Tint 80

Avoid beside #244A65 — 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 #256166 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

Every model

Export

:root {
  --color-base: #256166;
  --color-base-rgb: 37 97 102;
  --color-base-oklch: oklch(45.6% 0.062 202.8);
  --color-50: #F3FBFB;
  --color-100: #E0F3F5;
  --color-200: #C3E6E9;
  --color-300: #99D1D6;
  --color-400: #72B9C0;
  --color-500: #519DA4;
  --color-600: #44797E;
  --color-700: #34575A;
  --color-800: #253A3C;
  --color-900: #182425;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  feldgrau: {
    50: '#F3FBFB',
    100: '#E0F3F5',
    200: '#C3E6E9',
    300: '#99D1D6',
    400: '#72B9C0',
    500: '#519DA4',
    600: '#44797E',
    700: '#34575A',
    800: '#253A3C',
    900: '#182425',
  },
}

$base: #256166;
$base-ink: #FFFFFF;
$base-50: #F3FBFB;
$base-100: #E0F3F5;
$base-200: #C3E6E9;
$base-300: #99D1D6;
$base-400: #72B9C0;
$base-500: #519DA4;
$base-600: #44797E;
$base-700: #34575A;
$base-800: #253A3C;
$base-900: #182425;
$base-hover: #1D4D51;
$base-subtle: #B3D8DB;

{
    "color": {
        "base": {
            "value": "#256166",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3FBFB",
                "type": "color"
            },
            "100": {
                "value": "#E0F3F5",
                "type": "color"
            },
            "200": {
                "value": "#C3E6E9",
                "type": "color"
            },
            "300": {
                "value": "#99D1D6",
                "type": "color"
            },
            "400": {
                "value": "#72B9C0",
                "type": "color"
            },
            "500": {
                "value": "#519DA4",
                "type": "color"
            },
            "600": {
                "value": "#44797E",
                "type": "color"
            },
            "700": {
                "value": "#34575A",
                "type": "color"
            },
            "800": {
                "value": "#253A3C",
                "type": "color"
            },
            "900": {
                "value": "#182425",
                "type": "color"
            }
        }
    }
}

Palettes built on #256166

Color Lab

Pairs with #256166

UI roles & guardrails

In real applications

Scales

Every model

Export