What color is #125156?

#125156 is a dark cyan. In RGB it is rgb(18, 81, 86), and in HSL hsl(184, 65%, 20%).

Is #125156 accessible as text?

On white, #125156 has a contrast ratio of 8.99:1 (passes WCAG AA for body text); on black it is 2.34:1 (fails). For text placed on #125156, use white for the best readability.

What is the closest Tailwind color to #125156?

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

What colors go well with #125156?

#125156 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #541612. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #125156 below.

Is #125156 good for buttons?

#125156 works well for buttons and highlights, but use white text on #125156 — black text only reaches 2.34:1, below the 4.5:1 needed for normal-size labels.

Is #125156 the same as CSS darkslategray?

No — #125156 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#125156 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #125156

Not just a swatch — here's how #125156 works with other colors. Named schemes with #125156 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #125156 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 #125156 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 #125156 Surface #14161A Highlight #F4F6F8 Secondary #596771 Accent #407277

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 #125156 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 #125156 Secondary #617274 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 #125156 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 38/100

Low

Middle-weight — neither delicate nor heavy.

Depth 58/100

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 41/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 62/100

High

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 58/100

Moderate

Workable accent with care around contrast.

Surface fit 40/100

Moderate

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 #125156

For UI

For branding

For interior

For fashion

People also use #125156 with

Fern Green Prussian 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 9.0:1. Use

Subtle surface Use #C3E7E9 for cards and hover fills. Tint 80

Avoid beside #123A54 — 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 #125156 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: #125156;
  --color-base-rgb: 18 81 86;
  --color-base-oklch: oklch(39.9% 0.061 202.9);
  --color-50: #F2FCFD;
  --color-100: #DDF7F9;
  --color-200: #BCEDF1;
  --color-300: #8EDCE2;
  --color-400: #63C8CF;
  --color-500: #41ACB4;
  --color-600: #388489;
  --color-700: #2D5E62;
  --color-800: #213E40;
  --color-900: #162627;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-gray: {
    50: '#F2FCFD',
    100: '#DDF7F9',
    200: '#BCEDF1',
    300: '#8EDCE2',
    400: '#63C8CF',
    500: '#41ACB4',
    600: '#388489',
    700: '#2D5E62',
    800: '#213E40',
    900: '#162627',
  },
}

$base: #125156;
$base-ink: #FFFFFF;
$base-50: #F2FCFD;
$base-100: #DDF7F9;
$base-200: #BCEDF1;
$base-300: #8EDCE2;
$base-400: #63C8CF;
$base-500: #41ACB4;
$base-600: #388489;
$base-700: #2D5E62;
$base-800: #213E40;
$base-900: #162627;
$base-hover: #0E4043;
$base-subtle: #A4DCE0;

{
    "color": {
        "base": {
            "value": "#125156",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2FCFD",
                "type": "color"
            },
            "100": {
                "value": "#DDF7F9",
                "type": "color"
            },
            "200": {
                "value": "#BCEDF1",
                "type": "color"
            },
            "300": {
                "value": "#8EDCE2",
                "type": "color"
            },
            "400": {
                "value": "#63C8CF",
                "type": "color"
            },
            "500": {
                "value": "#41ACB4",
                "type": "color"
            },
            "600": {
                "value": "#388489",
                "type": "color"
            },
            "700": {
                "value": "#2D5E62",
                "type": "color"
            },
            "800": {
                "value": "#213E40",
                "type": "color"
            },
            "900": {
                "value": "#162627",
                "type": "color"
            }
        }
    }
}

Palettes built on #125156

Color Lab

Pairs with #125156

UI roles & guardrails

In real applications

Scales

Every model

Export