What color is #2A5B59?

#2A5B59 is a dark cyan. In RGB it is rgb(42, 91, 89), and in HSL hsl(178, 37%, 26%).

Is #2A5B59 accessible as text?

On white, #2A5B59 has a contrast ratio of 7.67:1 (passes WCAG AA for body text); on black it is 2.74:1 (fails). For text placed on #2A5B59, use white for the best readability.

What is the closest Tailwind color to #2A5B59?

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

What colors go well with #2A5B59?

#2A5B59 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5B2A2B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #2A5B59 below.

Is #2A5B59 good for buttons?

#2A5B59 works well for buttons and highlights, but use white text on #2A5B59 — black text only reaches 2.74:1, below the 4.5:1 needed for normal-size labels.

Is #2A5B59 the same as CSS darkslategray?

No — #2A5B59 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#2A5B59 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #2A5B59

Not just a swatch — here's how #2A5B59 works with other colors. Named schemes with #2A5B59 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #2A5B59 Accent #A7C4BD Surface #E0DABE Secondary #9AA0A0 Anchor #1C3549

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

Accent #2A5B59 Secondary #AEB4B8 Surface #F1F2F0 Support #7994A4 Anchor #2E3236

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

Lead #2A5B59 Secondary #725018 Surface #E4DCC0 Accent #3A5142 Anchor #552341

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

Dominant #2A5B59 Anchor #382B1E Surface #ECE4D0 Accent #819C71 Secondary #3A3933

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

Surface #F6F4EF Accent #2A5B59 Secondary #6D7D7C Support #979286 Ink #16140F

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 #2A5B59 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 42/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 54/100

Moderate

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

Naturalness 12/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 43/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 59/100

Moderate

Restrained and premium — deep, quiet, high-end packaging and fashion.

Brand distinctiveness 21/100

Low

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

UI accent fit 63/100

High

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

Surface fit 40/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 87/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #2A5B59

For UI

For branding

For interior

For fashion

People also use #2A5B59 with

Fern Green Charcoal Espresso 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 7.7:1. Use

Subtle surface Use #CFE3E3 for cards and hover fills. Tint 80

Avoid beside #2A4C5B — 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 #2A5B59 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: #2A5B59;
  --color-base-rgb: 42 91 89;
  --color-base-oklch: oklch(43.7% 0.053 191.8);
  --color-50: #F4FAFA;
  --color-100: #E3F3F2;
  --color-200: #C7E5E4;
  --color-300: #A0CFCE;
  --color-400: #7AB8B6;
  --color-500: #5A9B99;
  --color-600: #4A7876;
  --color-700: #385655;
  --color-800: #283939;
  --color-900: #1A2423;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-gray: {
    50: '#F4FAFA',
    100: '#E3F3F2',
    200: '#C7E5E4',
    300: '#A0CFCE',
    400: '#7AB8B6',
    500: '#5A9B99',
    600: '#4A7876',
    700: '#385655',
    800: '#283939',
    900: '#1A2423',
  },
}

$base: #2A5B59;
$base-ink: #FFFFFF;
$base-50: #F4FAFA;
$base-100: #E3F3F2;
$base-200: #C7E5E4;
$base-300: #A0CFCE;
$base-400: #7AB8B6;
$base-500: #5A9B99;
$base-600: #4A7876;
$base-700: #385655;
$base-800: #283939;
$base-900: #1A2423;
$base-hover: #214947;
$base-subtle: #B6D6D5;

{
    "color": {
        "base": {
            "value": "#2A5B59",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4FAFA",
                "type": "color"
            },
            "100": {
                "value": "#E3F3F2",
                "type": "color"
            },
            "200": {
                "value": "#C7E5E4",
                "type": "color"
            },
            "300": {
                "value": "#A0CFCE",
                "type": "color"
            },
            "400": {
                "value": "#7AB8B6",
                "type": "color"
            },
            "500": {
                "value": "#5A9B99",
                "type": "color"
            },
            "600": {
                "value": "#4A7876",
                "type": "color"
            },
            "700": {
                "value": "#385655",
                "type": "color"
            },
            "800": {
                "value": "#283939",
                "type": "color"
            },
            "900": {
                "value": "#1A2423",
                "type": "color"
            }
        }
    }
}

Palettes built on #2A5B59

Color Lab

Pairs with #2A5B59

UI roles & guardrails

In real applications

Scales

Every model

Export