What color is #031D37?

#031D37 is a very dark, vivid blue. In RGB it is rgb(3, 29, 55), and in HSL hsl(210, 90%, 11%).

Is #031D37 accessible as text?

On white, #031D37 has a contrast ratio of 17.01:1 (passes WCAG AA for body text); on black it is 1.23:1 (fails). For text placed on #031D37, use white for the best readability.

What is the closest Tailwind color to #031D37?

The nearest Tailwind CSS token is mist-900 (#161B1D).

What colors go well with #031D37?

#031D37 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #351C03. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #031D37 below.

Is #031D37 good for buttons?

#031D37 works well for buttons and highlights, but use white text on #031D37 — black text only reaches 1.23:1, below the 4.5:1 needed for normal-size labels.

Is #031D37 the same as CSS midnightblue?

No — #031D37 is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#031D37 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #031D37

Not just a swatch — here's how #031D37 works with other colors. Named schemes with #031D37 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #031D37 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Navy 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 #031D37 Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Navy 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 #031D37 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #243C55

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

Vintage Leather Lead · 5 colors

Lead #031D37 Secondary #7F4537 Surface #E1DDC0 Accent #375245 Anchor #57233B

Navy 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 #031D37 Secondary #37404A Support #959386 Ink #16140F

Navy 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 Navy carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #031D37 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 33/100

Cool

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

Softness 23/100

Low

Firm and assertive — carries weight and contrast.

Depth 75/100

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 27/100

Low

A faint retro warmth without tipping into sepia.

Luxury 76/100

High

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 16/100

Very low

Weak as an action color — too pale, too dark or too muted to signal.

Surface fit 52/100

Moderate

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 #031D37

For UI

For branding

For interior

For fashion

People also use #031D37 with

Castleton Green Jet Black Graphite 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 17.0:1. Use

Subtle surface Use #B4D2EF for cards and hover fills. Tint 80

Avoid beside #030B35 — 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 #031D37 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: #031D37;
  --color-base-rgb: 3 29 55;
  --color-base-oklch: oklch(22.7% 0.060 251.0);
  --color-50: #F0F7FE;
  --color-100: #D8EBFD;
  --color-200: #B2D6FB;
  --color-300: #7EB8F2;
  --color-400: #4F99E3;
  --color-500: #2B7ACA;
  --color-600: #296199;
  --color-700: #23476C;
  --color-800: #1B3046;
  --color-900: #121F2B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  navy: {
    50: '#F0F7FE',
    100: '#D8EBFD',
    200: '#B2D6FB',
    300: '#7EB8F2',
    400: '#4F99E3',
    500: '#2B7ACA',
    600: '#296199',
    700: '#23476C',
    800: '#1B3046',
    900: '#121F2B',
  },
}

$base: #031D37;
$base-ink: #FFFFFF;
$base-50: #F0F7FE;
$base-100: #D8EBFD;
$base-200: #B2D6FB;
$base-300: #7EB8F2;
$base-400: #4F99E3;
$base-500: #2B7ACA;
$base-600: #296199;
$base-700: #23476C;
$base-800: #1B3046;
$base-900: #121F2B;
$base-hover: #02162B;
$base-subtle: #8CBBE9;

{
    "color": {
        "base": {
            "value": "#031D37",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F7FE",
                "type": "color"
            },
            "100": {
                "value": "#D8EBFD",
                "type": "color"
            },
            "200": {
                "value": "#B2D6FB",
                "type": "color"
            },
            "300": {
                "value": "#7EB8F2",
                "type": "color"
            },
            "400": {
                "value": "#4F99E3",
                "type": "color"
            },
            "500": {
                "value": "#2B7ACA",
                "type": "color"
            },
            "600": {
                "value": "#296199",
                "type": "color"
            },
            "700": {
                "value": "#23476C",
                "type": "color"
            },
            "800": {
                "value": "#1B3046",
                "type": "color"
            },
            "900": {
                "value": "#121F2B",
                "type": "color"
            }
        }
    }
}