What color is #312D4E?

#312D4E is a dark, muted indigo. In RGB it is rgb(49, 45, 78), and in HSL hsl(247, 27%, 24%).

Is #312D4E accessible as text?

On white, #312D4E has a contrast ratio of 13.00:1 (passes WCAG AA for body text); on black it is 1.62:1 (fails). For text placed on #312D4E, use white for the best readability.

What is the closest Tailwind color to #312D4E?

The nearest Tailwind CSS token is sky-950 (#052F4A).

What colors go well with #312D4E?

#312D4E pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #4A4E2D. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #312D4E below.

Is #312D4E good for buttons?

#312D4E works well for buttons and highlights, but use white text on #312D4E — black text only reaches 1.62:1, below the 4.5:1 needed for normal-size labels.

Is #312D4E the same as CSS midnightblue?

No — #312D4E is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#312D4E Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #312D4E

Not just a swatch — here's how #312D4E works with other colors. Named schemes with #312D4E in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #312D4E Accent #A5C4C3 Surface #E9D6BF Secondary #9AA0A1 Anchor #22334A

Gunmetal 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 #312D4E Secondary #AFB4B8 Surface #F1F2F0 Support #7F92A7 Anchor #2E3236

Gunmetal 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 #312D4E Secondary #7E4633 Surface #EDD8C2 Accent #365247 Anchor #582238

Gunmetal 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.

Luxury Packaging Feature · 5 colors

Feature #312D4E Anchor #141210 Accent #DB9757 Secondary #282732 Surface #F3ECE3

Gunmetal Gray carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #312D4E Secondary #575662 Support #9D9088 Ink #18140F

Gunmetal 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 Gunmetal Gray carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #312D4E 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 41/100

Neutral

Balanced temperature — flexible, sits between warm and cool schemes.

Softness 31/100

Low

Firm and assertive — carries weight and contrast.

Depth 66/100

High

Deep and grounding — anchors a layout, strong dark-mode base.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 38/100

Low

A faint retro warmth without tipping into sepia.

Luxury 69/100

High

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

Brand distinctiveness 22/100

Low

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

UI accent fit 35/100

Low

Workable accent with care around contrast.

Surface fit 47/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 92/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #312D4E

For UI

For branding

For interior

For fashion

People also use #312D4E with

Outer Space Onyx Army Green Gainsboro Gunmetal 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 13.0:1. Use

Subtle surface Use #D2D1E0 for cards and hover fills. Tint 80

Avoid beside #3C2D4E — 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 #312D4E 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: #312D4E;
  --color-base-rgb: 49 45 78;
  --color-base-oklch: oklch(31.8% 0.058 288.2);
  --color-50: #F6F5FA;
  --color-100: #E6E5F0;
  --color-200: #CECBE1;
  --color-300: #AAA6C9;
  --color-400: #8883AF;
  --color-500: #686392;
  --color-600: #545072;
  --color-700: #3F3D52;
  --color-800: #2B2A37;
  --color-900: #1C1B22;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  gunmetal-gray: {
    50: '#F6F5FA',
    100: '#E6E5F0',
    200: '#CECBE1',
    300: '#AAA6C9',
    400: '#8883AF',
    500: '#686392',
    600: '#545072',
    700: '#3F3D52',
    800: '#2B2A37',
    900: '#1C1B22',
  },
}

$base: #312D4E;
$base-ink: #FFFFFF;
$base-50: #F6F5FA;
$base-100: #E6E5F0;
$base-200: #CECBE1;
$base-300: #AAA6C9;
$base-400: #8883AF;
$base-500: #686392;
$base-600: #545072;
$base-700: #3F3D52;
$base-800: #2B2A37;
$base-900: #1C1B22;
$base-hover: #27243E;
$base-subtle: #BCB9D1;

{
    "color": {
        "base": {
            "value": "#312D4E",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F5FA",
                "type": "color"
            },
            "100": {
                "value": "#E6E5F0",
                "type": "color"
            },
            "200": {
                "value": "#CECBE1",
                "type": "color"
            },
            "300": {
                "value": "#AAA6C9",
                "type": "color"
            },
            "400": {
                "value": "#8883AF",
                "type": "color"
            },
            "500": {
                "value": "#686392",
                "type": "color"
            },
            "600": {
                "value": "#545072",
                "type": "color"
            },
            "700": {
                "value": "#3F3D52",
                "type": "color"
            },
            "800": {
                "value": "#2B2A37",
                "type": "color"
            },
            "900": {
                "value": "#1C1B22",
                "type": "color"
            }
        }
    }
}