What color is #27557A?

#27557A is a dark cyan-blue. In RGB it is rgb(39, 85, 122), and in HSL hsl(207, 52%, 32%).

Is #27557A accessible as text?

On white, #27557A has a contrast ratio of 7.87:1 (passes WCAG AA for body text); on black it is 2.67:1 (fails). For text placed on #27557A, use white for the best readability.

What is the closest Tailwind color to #27557A?

The nearest Tailwind CSS token is sky-800 (#00598A).

What colors go well with #27557A?

#27557A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #7C4D27. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #27557A below.

Is #27557A good for buttons?

#27557A works well for buttons and highlights, but use white text on #27557A — black text only reaches 2.67:1, below the 4.5:1 needed for normal-size labels.

Is #27557A the same as CSS darkslategray?

No — #27557A is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#27557A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #27557A

Not just a swatch — here's how #27557A works with other colors. Named schemes with #27557A in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #27557A Accent #A5C4C0 Surface #DEDBBF Secondary #9AA0A0 Anchor #20344A

Classic Blue 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 #27557A Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Classic Blue 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 #27557A Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #4E779B

Classic Blue is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Classic Blue.

Vintage Leather Lead · 5 colors

Lead #27557A Secondary #7F4438 Surface #E1DDC0 Accent #375245 Anchor #57233C

Classic Blue 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 #27557A Secondary #6C7B89 Support #969386 Ink #16140F

Classic Blue 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 Classic Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #27557A 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 27/100

Cool

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

Softness 40/100

Low

Middle-weight — neither delicate nor heavy.

Depth 55/100

Moderate

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

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 48/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 61/100

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 74/100

High

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

Surface fit 33/100

Low

Usable as a tinted surface in measured doses.

Print safety 82/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #27557A

For UI

For branding

For interior

For fashion

People also use #27557A with

Persian Green Midnight Blue Russet Gainsboro Charcoal

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 7.9:1. Use

Subtle surface Use #CFDEE9 for cards and hover fills. Tint 80

Avoid beside #273A7C — 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 #27557A at work across the surfaces designers actually ship.

Website / UI

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Build faster.

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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: #27557A;
  --color-base-rgb: 39 85 122;
  --color-base-oklch: oklch(43.5% 0.079 245.4);
  --color-50: #F3F8FC;
  --color-100: #DFECF6;
  --color-200: #C1D8EB;
  --color-300: #96BBD9;
  --color-400: #6E9DC4;
  --color-500: #4D7FA8;
  --color-600: #416481;
  --color-700: #32495C;
  --color-800: #24323D;
  --color-900: #181F26;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  classic-blue: {
    50: '#F3F8FC',
    100: '#DFECF6',
    200: '#C1D8EB',
    300: '#96BBD9',
    400: '#6E9DC4',
    500: '#4D7FA8',
    600: '#416481',
    700: '#32495C',
    800: '#24323D',
    900: '#181F26',
  },
}

$base: #27557A;
$base-ink: #FFFFFF;
$base-50: #F3F8FC;
$base-100: #DFECF6;
$base-200: #C1D8EB;
$base-300: #96BBD9;
$base-400: #6E9DC4;
$base-500: #4D7FA8;
$base-600: #416481;
$base-700: #32495C;
$base-800: #24323D;
$base-900: #181F26;
$base-hover: #1F4563;
$base-subtle: #B6CDE0;

{
    "color": {
        "base": {
            "value": "#27557A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F8FC",
                "type": "color"
            },
            "100": {
                "value": "#DFECF6",
                "type": "color"
            },
            "200": {
                "value": "#C1D8EB",
                "type": "color"
            },
            "300": {
                "value": "#96BBD9",
                "type": "color"
            },
            "400": {
                "value": "#6E9DC4",
                "type": "color"
            },
            "500": {
                "value": "#4D7FA8",
                "type": "color"
            },
            "600": {
                "value": "#416481",
                "type": "color"
            },
            "700": {
                "value": "#32495C",
                "type": "color"
            },
            "800": {
                "value": "#24323D",
                "type": "color"
            },
            "900": {
                "value": "#181F26",
                "type": "color"
            }
        }
    }
}