What color is #315554?

#315554 is a dark, muted cyan. In RGB it is rgb(49, 85, 84), and in HSL hsl(178, 27%, 26%).

Is #315554 accessible as text?

On white, #315554 has a contrast ratio of 8.21:1 (passes WCAG AA for body text); on black it is 2.56:1 (fails). For text placed on #315554, use white for the best readability.

What is the closest Tailwind color to #315554?

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

What colors go well with #315554?

#315554 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #543032. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #315554 below.

Is #315554 good for buttons?

#315554 works well for buttons and highlights, but use white text on #315554 — black text only reaches 2.56:1, below the 4.5:1 needed for normal-size labels.

Is #315554 the same as CSS darkslategray?

No — #315554 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#315554 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #315554

Not just a swatch — here's how #315554 works with other colors. Named schemes with #315554 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #315554 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 #315554 Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A4 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 #315554 Secondary #725018 Surface #E4DCC0 Accent #3A5142 Anchor #552340

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 #315554 Anchor #382B1E Surface #ECE4D0 Accent #819C72 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 #315554 Secondary #6C7877 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 #315554 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 40/100

Neutral

Balanced temperature — flexible, sits between warm and cool schemes.

Softness 42/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 55/100

Moderate

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

Naturalness 9/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 38/100

Low

A faint retro warmth without tipping into sepia.

Luxury 59/100

Moderate

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

Brand distinctiveness 16/100

Very low

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

UI accent fit 55/100

Moderate

Workable accent with care around contrast.

Surface fit 45/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 90/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #315554

For UI

For branding

For interior

For fashion

People also use #315554 with

Dark Olive 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 8.2:1. Use

Subtle surface Use #D2E1E0 for cards and hover fills. Tint 80

Avoid beside #304954 — 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 #315554 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

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Export

:root {
  --color-base: #315554;
  --color-base-rgb: 49 85 84;
  --color-base-oklch: oklch(42.2% 0.042 193.4);
  --color-50: #F5FAF9;
  --color-100: #E5F0F0;
  --color-200: #CBE1E0;
  --color-300: #A6C9C8;
  --color-400: #83AFAE;
  --color-500: #639291;
  --color-600: #507271;
  --color-700: #3D5252;
  --color-800: #2A3737;
  --color-900: #1B2222;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-gray: {
    50: '#F5FAF9',
    100: '#E5F0F0',
    200: '#CBE1E0',
    300: '#A6C9C8',
    400: '#83AFAE',
    500: '#639291',
    600: '#507271',
    700: '#3D5252',
    800: '#2A3737',
    900: '#1B2222',
  },
}

$base: #315554;
$base-ink: #FFFFFF;
$base-50: #F5FAF9;
$base-100: #E5F0F0;
$base-200: #CBE1E0;
$base-300: #A6C9C8;
$base-400: #83AFAE;
$base-500: #639291;
$base-600: #507271;
$base-700: #3D5252;
$base-800: #2A3737;
$base-900: #1B2222;
$base-hover: #274342;
$base-subtle: #BBD2D1;

{
    "color": {
        "base": {
            "value": "#315554",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5FAF9",
                "type": "color"
            },
            "100": {
                "value": "#E5F0F0",
                "type": "color"
            },
            "200": {
                "value": "#CBE1E0",
                "type": "color"
            },
            "300": {
                "value": "#A6C9C8",
                "type": "color"
            },
            "400": {
                "value": "#83AFAE",
                "type": "color"
            },
            "500": {
                "value": "#639291",
                "type": "color"
            },
            "600": {
                "value": "#507271",
                "type": "color"
            },
            "700": {
                "value": "#3D5252",
                "type": "color"
            },
            "800": {
                "value": "#2A3737",
                "type": "color"
            },
            "900": {
                "value": "#1B2222",
                "type": "color"
            }
        }
    }
}

Palettes built on #315554

Color Lab

Pairs with #315554

UI roles & guardrails

In real applications

Scales

Every model

Export