What color is #255C55?

#255C55 is a dark teal. In RGB it is rgb(37, 92, 85), and in HSL hsl(172, 43%, 25%).

Is #255C55 accessible as text?

On white, #255C55 has a contrast ratio of 7.66:1 (passes WCAG AA for body text); on black it is 2.74:1 (fails). For text placed on #255C55, use white for the best readability.

What is the closest Tailwind color to #255C55?

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

What colors go well with #255C55?

#255C55 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5B242C. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #255C55 below.

Is #255C55 good for buttons?

#255C55 works well for buttons and highlights, but use white text on #255C55 — black text only reaches 2.74:1, below the 4.5:1 needed for normal-size labels.

Is #255C55 the same as CSS darkslategray?

No — #255C55 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#255C55 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #255C55

Not just a swatch — here's how #255C55 works with other colors. Named schemes with #255C55 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #255C55 Accent #A7C4BC 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 #255C55 Secondary #AEB4B7 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 #255C55 Secondary #725018 Surface #E4DCC0 Accent #3A5142 Anchor #5B241E

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 #255C55 Anchor #382B1E Surface #ECE4D0 Accent #829C71 Secondary #3A3833

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 #F7F4EF Accent #255C55 Secondary #6C7D7A 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 #255C55 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 21/100

Low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 46/100

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 23/100

Low

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

UI accent fit 66/100

High

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

Surface fit 39/100

Low

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 #255C55

For UI

For branding

For interior

For fashion

People also use #255C55 with

Fern Green Charcoal 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 7.7:1. Use

Subtle surface Use #CDE5E1 for cards and hover fills. Tint 80

Avoid beside #24505B — 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 #255C55 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: #255C55;
  --color-base-rgb: 37 92 85;
  --color-base-oklch: oklch(43.6% 0.059 184.1);
  --color-50: #F4FBFA;
  --color-100: #E1F4F1;
  --color-200: #C5E8E3;
  --color-300: #9CD3CC;
  --color-400: #75BDB3;
  --color-500: #55A096;
  --color-600: #467C75;
  --color-700: #365954;
  --color-800: #263B38;
  --color-900: #192423;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-gray: {
    50: '#F4FBFA',
    100: '#E1F4F1',
    200: '#C5E8E3',
    300: '#9CD3CC',
    400: '#75BDB3',
    500: '#55A096',
    600: '#467C75',
    700: '#365954',
    800: '#263B38',
    900: '#192423',
  },
}

$base: #255C55;
$base-ink: #FFFFFF;
$base-50: #F4FBFA;
$base-100: #E1F4F1;
$base-200: #C5E8E3;
$base-300: #9CD3CC;
$base-400: #75BDB3;
$base-500: #55A096;
$base-600: #467C75;
$base-700: #365954;
$base-800: #263B38;
$base-900: #192423;
$base-hover: #1D4943;
$base-subtle: #B3D8D3;

{
    "color": {
        "base": {
            "value": "#255C55",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4FBFA",
                "type": "color"
            },
            "100": {
                "value": "#E1F4F1",
                "type": "color"
            },
            "200": {
                "value": "#C5E8E3",
                "type": "color"
            },
            "300": {
                "value": "#9CD3CC",
                "type": "color"
            },
            "400": {
                "value": "#75BDB3",
                "type": "color"
            },
            "500": {
                "value": "#55A096",
                "type": "color"
            },
            "600": {
                "value": "#467C75",
                "type": "color"
            },
            "700": {
                "value": "#365954",
                "type": "color"
            },
            "800": {
                "value": "#263B38",
                "type": "color"
            },
            "900": {
                "value": "#192423",
                "type": "color"
            }
        }
    }
}

Palettes built on #255C55

Color Lab

Pairs with #255C55

UI roles & guardrails

In real applications

Scales

Every model

Export