What color is #155B60?

#155B60 is a dark cyan. In RGB it is rgb(21, 91, 96), and in HSL hsl(184, 64%, 23%).

Is #155B60 accessible as text?

On white, #155B60 has a contrast ratio of 7.79:1 (passes WCAG AA for body text); on black it is 2.70:1 (fails). For text placed on #155B60, use white for the best readability.

What is the closest Tailwind color to #155B60?

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

What colors go well with #155B60?

#155B60 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #601A15. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #155B60 below.

Is #155B60 good for buttons?

#155B60 works well for buttons and highlights, but use white text on #155B60 — black text only reaches 2.70:1, below the 4.5:1 needed for normal-size labels.

Is #155B60 the same as CSS darkslategray?

No — #155B60 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#155B60 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #155B60

Not just a swatch — here's how #155B60 works with other colors. Named schemes with #155B60 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #155B60 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 #155B60 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 #155B60 Surface #14161A Highlight #F4F6F8 Secondary #596771 Accent #457D81

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 #155B60 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 #155B60 Secondary #697C7E 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 #155B60 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 33/100

Cool

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

Softness 41/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 55/100

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 45/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 60/100

High

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

Brand distinctiveness 26/100

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 37/100

Low

Usable as a tinted surface in measured doses.

Print safety 83/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #155B60

For UI

For branding

For interior

For fashion

People also use #155B60 with

Sea Green Yale Blue Rosewood 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 7.8:1. Use

Subtle surface Use #C6E7EA for cards and hover fills. Tint 80

Avoid beside #154260 — 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 #155B60 at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

A working theme, generated in seconds.

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: #155B60;
  --color-base-rgb: 21 91 96;
  --color-base-oklch: oklch(43.2% 0.066 202.2);
  --color-50: #F2FCFD;
  --color-100: #DDF7F8;
  --color-200: #BCEDF0;
  --color-300: #8EDBE1;
  --color-400: #64C7CE;
  --color-500: #42ABB3;
  --color-600: #398389;
  --color-700: #2E5E61;
  --color-800: #213E40;
  --color-900: #162627;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-gray: {
    50: '#F2FCFD',
    100: '#DDF7F8',
    200: '#BCEDF0',
    300: '#8EDBE1',
    400: '#64C7CE',
    500: '#42ABB3',
    600: '#398389',
    700: '#2E5E61',
    800: '#213E40',
    900: '#162627',
  },
}

$base: #155B60;
$base-ink: #FFFFFF;
$base-50: #F2FCFD;
$base-100: #DDF7F8;
$base-200: #BCEDF0;
$base-300: #8EDBE1;
$base-400: #64C7CE;
$base-500: #42ABB3;
$base-600: #398389;
$base-700: #2E5E61;
$base-800: #213E40;
$base-900: #162627;
$base-hover: #11494D;
$base-subtle: #A7DDE1;

{
    "color": {
        "base": {
            "value": "#155B60",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2FCFD",
                "type": "color"
            },
            "100": {
                "value": "#DDF7F8",
                "type": "color"
            },
            "200": {
                "value": "#BCEDF0",
                "type": "color"
            },
            "300": {
                "value": "#8EDBE1",
                "type": "color"
            },
            "400": {
                "value": "#64C7CE",
                "type": "color"
            },
            "500": {
                "value": "#42ABB3",
                "type": "color"
            },
            "600": {
                "value": "#398389",
                "type": "color"
            },
            "700": {
                "value": "#2E5E61",
                "type": "color"
            },
            "800": {
                "value": "#213E40",
                "type": "color"
            },
            "900": {
                "value": "#162627",
                "type": "color"
            }
        }
    }
}

Palettes built on #155B60

Color Lab

Pairs with #155B60

UI roles & guardrails

In real applications

Scales

Every model

Export