What color is #154B4E?

#154B4E is a dark cyan. In RGB it is rgb(21, 75, 78), and in HSL hsl(183, 58%, 19%).

Is #154B4E accessible as text?

On white, #154B4E has a contrast ratio of 9.78:1 (passes WCAG AA for body text); on black it is 2.15:1 (fails). For text placed on #154B4E, use white for the best readability.

What is the closest Tailwind color to #154B4E?

The nearest Tailwind CSS token is teal-900 (#0B4F4A).

What colors go well with #154B4E?

#154B4E pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #4D1714. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #154B4E below.

Is #154B4E good for buttons?

#154B4E works well for buttons and highlights, but use white text on #154B4E — black text only reaches 2.15:1, below the 4.5:1 needed for normal-size labels.

Is #154B4E the same as CSS darkslategray?

No — #154B4E is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#154B4E Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #154B4E

Not just a swatch — here's how #154B4E works with other colors. Named schemes with #154B4E in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #154B4E Accent #A6C4BE Surface #DFDABE Secondary #9AA0A0 Anchor #1D3549

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 #154B4E Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 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.

Tech Product Signal · 5 colors

Signal #154B4E Surface #14161A Highlight #F4F6F8 Secondary #596771 Accent #3F6C6E

Dark 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 Dark Slate Gray.

Vintage Leather Lead · 5 colors

Lead #154B4E Secondary #715017 Surface #E3DCC0 Accent #395143 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.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #154B4E Secondary #5C6C6D 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.

Build a working theme in the generator →

Color Lab

How #154B4E 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 36/100

Cool

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

Softness 37/100

Low

Middle-weight — neither delicate nor heavy.

Depth 60/100

Moderate

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

Naturalness 7/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 38/100

Low

A faint retro warmth without tipping into sepia.

Luxury 64/100

High

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 50/100

Moderate

Workable accent with care around contrast.

Surface fit 44/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 86/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #154B4E

For UI

For branding

For interior

For fashion

People also use #154B4E with

Hunter Green Prussian Blue Oxblood 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 9.8:1. Use

Subtle surface Use #C4E5E7 for cards and hover fills. Tint 80

Avoid beside #14374D — 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 #154B4E 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: #154B4E;
  --color-base-rgb: 21 75 78;
  --color-base-oklch: oklch(38.0% 0.055 200.4);
  --color-50: #F2FCFC;
  --color-100: #DEF6F7;
  --color-200: #BFEBEE;
  --color-300: #92D9DD;
  --color-400: #69C4C9;
  --color-500: #47A8AD;
  --color-600: #3D8185;
  --color-700: #305C5F;
  --color-800: #233D3E;
  --color-900: #172626;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-gray: {
    50: '#F2FCFC',
    100: '#DEF6F7',
    200: '#BFEBEE',
    300: '#92D9DD',
    400: '#69C4C9',
    500: '#47A8AD',
    600: '#3D8185',
    700: '#305C5F',
    800: '#233D3E',
    900: '#172626',
  },
}

$base: #154B4E;
$base-ink: #FFFFFF;
$base-50: #F2FCFC;
$base-100: #DEF6F7;
$base-200: #BFEBEE;
$base-300: #92D9DD;
$base-400: #69C4C9;
$base-500: #47A8AD;
$base-600: #3D8185;
$base-700: #305C5F;
$base-800: #233D3E;
$base-900: #172626;
$base-hover: #103B3D;
$base-subtle: #A6DADC;

{
    "color": {
        "base": {
            "value": "#154B4E",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2FCFC",
                "type": "color"
            },
            "100": {
                "value": "#DEF6F7",
                "type": "color"
            },
            "200": {
                "value": "#BFEBEE",
                "type": "color"
            },
            "300": {
                "value": "#92D9DD",
                "type": "color"
            },
            "400": {
                "value": "#69C4C9",
                "type": "color"
            },
            "500": {
                "value": "#47A8AD",
                "type": "color"
            },
            "600": {
                "value": "#3D8185",
                "type": "color"
            },
            "700": {
                "value": "#305C5F",
                "type": "color"
            },
            "800": {
                "value": "#233D3E",
                "type": "color"
            },
            "900": {
                "value": "#172626",
                "type": "color"
            }
        }
    }
}

Palettes built on #154B4E

Color Lab

Pairs with #154B4E

UI roles & guardrails

In real applications

Scales

Every model

Export