What color is #31475E?

#31475E is a dark, muted blue. In RGB it is rgb(49, 71, 94), and in HSL hsl(211, 31%, 28%).

Is #31475E accessible as text?

On white, #31475E has a contrast ratio of 9.57:1 (passes WCAG AA for body text); on black it is 2.19:1 (fails). For text placed on #31475E, use white for the best readability.

What is the closest Tailwind color to #31475E?

The nearest Tailwind CSS token is cyan-900 (#104E64).

What colors go well with #31475E?

#31475E pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5E4831. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #31475E below.

Is #31475E good for buttons?

#31475E works well for buttons and highlights, but use white text on #31475E — black text only reaches 2.19:1, below the 4.5:1 needed for normal-size labels.

Is #31475E the same as CSS darkslategray?

No — #31475E is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#31475E Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #31475E

Not just a swatch — here's how #31475E works with other colors. Named schemes with #31475E in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #31475E Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Charcoal 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 #31475E Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Charcoal 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 #31475E Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #53687E

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

Vintage Leather Lead · 5 colors

Lead #31475E Secondary #7F4538 Surface #E1DDC0 Accent #375245 Anchor #57233B

Charcoal 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 #31475E Secondary #656D75 Support #959386 Ink #16140F

Charcoal 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 Charcoal carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #31475E 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 37/100

Cool

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

Softness 39/100

Low

Middle-weight — neither delicate nor heavy.

Depth 58/100

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 36/100

Low

A faint retro warmth without tipping into sepia.

Luxury 62/100

High

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

Brand distinctiveness 19/100

Very low

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

UI accent fit 50/100

Moderate

Workable accent with care around contrast.

Surface fit 45/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 90/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #31475E

For UI

For branding

For interior

For fashion

People also use #31475E with

Myrtle Green Yale Blue Liver 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 9.6:1. Use

Subtle surface Use #D2DAE2 for cards and hover fills. Tint 80

Avoid beside #31385E — 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 #31475E 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: #31475E;
  --color-base-rgb: 49 71 94;
  --color-base-oklch: oklch(39.0% 0.048 250.2);
  --color-50: #F5F7FA;
  --color-100: #E4EAF1;
  --color-200: #CAD6E3;
  --color-300: #A4B7CC;
  --color-400: #7F98B3;
  --color-500: #5F7996;
  --color-600: #4E6074;
  --color-700: #3B4754;
  --color-800: #293038;
  --color-900: #1A1E23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  charcoal: {
    50: '#F5F7FA',
    100: '#E4EAF1',
    200: '#CAD6E3',
    300: '#A4B7CC',
    400: '#7F98B3',
    500: '#5F7996',
    600: '#4E6074',
    700: '#3B4754',
    800: '#293038',
    900: '#1A1E23',
  },
}

$base: #31475E;
$base-ink: #FFFFFF;
$base-50: #F5F7FA;
$base-100: #E4EAF1;
$base-200: #CAD6E3;
$base-300: #A4B7CC;
$base-400: #7F98B3;
$base-500: #5F7996;
$base-600: #4E6074;
$base-700: #3B4754;
$base-800: #293038;
$base-900: #1A1E23;
$base-hover: #27394B;
$base-subtle: #BBC7D5;

{
    "color": {
        "base": {
            "value": "#31475E",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F7FA",
                "type": "color"
            },
            "100": {
                "value": "#E4EAF1",
                "type": "color"
            },
            "200": {
                "value": "#CAD6E3",
                "type": "color"
            },
            "300": {
                "value": "#A4B7CC",
                "type": "color"
            },
            "400": {
                "value": "#7F98B3",
                "type": "color"
            },
            "500": {
                "value": "#5F7996",
                "type": "color"
            },
            "600": {
                "value": "#4E6074",
                "type": "color"
            },
            "700": {
                "value": "#3B4754",
                "type": "color"
            },
            "800": {
                "value": "#293038",
                "type": "color"
            },
            "900": {
                "value": "#1A1E23",
                "type": "color"
            }
        }
    }
}

Palettes built on #31475E

Color Lab

Pairs with #31475E

UI roles & guardrails

In real applications

Scales

Every model

Export