What color is #031F83?

#031F83 is a dark, vivid blue. In RGB it is rgb(3, 31, 131), and in HSL hsl(227, 96%, 26%).

Is #031F83 accessible as text?

On white, #031F83 has a contrast ratio of 13.75:1 (passes WCAG AA for body text); on black it is 1.53:1 (fails). For text placed on #031F83, use white for the best readability.

What is the closest Tailwind color to #031F83?

The nearest Tailwind CSS token is indigo-900 (#312C85).

What colors go well with #031F83?

#031F83 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #826603. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #031F83 below.

Is #031F83 good for buttons?

#031F83 works well for buttons and highlights, but use white text on #031F83 — black text only reaches 1.53:1, below the 4.5:1 needed for normal-size labels.

Is #031F83 the same as CSS darkblue?

No — #031F83 is not the CSS named color darkblue, but darkblue (#00008B) is the closest CSS named color.

#031F83 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #031F83

Not just a swatch — here's how #031F83 works with other colors. Named schemes with #031F83 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #031F83 Anchor #141210 Accent #ACAE53 Secondary #242933 Surface #F0EEE3

Phthalo Blue 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.

Moody Editorial Color · 5 colors

Color #031F83 Anchor #2A2A2E Secondary #6E6E74 Surface #E9E7DA Accent #130045

Phthalo Blue adds the colour to this moody editorial scheme — charcoal and a mid-grey around it, a bone highlight, and a muted jewel accent drawn from Phthalo Blue.

Coastal Morning Lead · 5 colors

Lead #031F83 Accent #A5C4C2 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

Phthalo Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Vintage Leather Lead · 5 colors

Lead #031F83 Secondary #7F4536 Surface #EED7C2 Accent #365246 Anchor #57223A

Phthalo 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 #F8F4EF Accent #031F83 Secondary #455577 Support #9D8F88 Ink #18140F

Phthalo 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 Phthalo Blue carrying the quiet middle.

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Color Lab

How #031F83 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 9/100

Cool

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

Softness 23/100

Low

Firm and assertive — carries weight and contrast.

Depth 72/100

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 23/100

Low

Clean and current — no dusty, aged cast.

Luxury 69/100

High

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

Brand distinctiveness 65/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 42/100

Moderate

Workable accent with care around contrast.

Surface fit 20/100

Very low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 69/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #031F83

For UI

For branding

For interior

For fashion

People also use #031F83 with

Steel Blue Midnight Blue Dark Olive 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 13.7:1. Use

Subtle surface Use #BFCAF3 for cards and hover fills. Tint 80

Avoid beside #120382 — 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 #031F83 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: #031F83;
  --color-base-rgb: 3 31 131;
  --color-base-oklch: oklch(31.1% 0.167 264.3);
  --color-50: #F0F3FE;
  --color-100: #D8E0FD;
  --color-200: #B1C1FC;
  --color-300: #7A94F6;
  --color-400: #4A6CE8;
  --color-500: #264BCF;
  --color-600: #253F9D;
  --color-700: #21316E;
  --color-800: #192348;
  --color-900: #12172C;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  phthalo-blue: {
    50: '#F0F3FE',
    100: '#D8E0FD',
    200: '#B1C1FC',
    300: '#7A94F6',
    400: '#4A6CE8',
    500: '#264BCF',
    600: '#253F9D',
    700: '#21316E',
    800: '#192348',
    900: '#12172C',
  },
}

$base: #031F83;
$base-ink: #FFFFFF;
$base-50: #F0F3FE;
$base-100: #D8E0FD;
$base-200: #B1C1FC;
$base-300: #7A94F6;
$base-400: #4A6CE8;
$base-500: #264BCF;
$base-600: #253F9D;
$base-700: #21316E;
$base-800: #192348;
$base-900: #12172C;
$base-hover: #021868;
$base-subtle: #9DAFF0;

{
    "color": {
        "base": {
            "value": "#031F83",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F3FE",
                "type": "color"
            },
            "100": {
                "value": "#D8E0FD",
                "type": "color"
            },
            "200": {
                "value": "#B1C1FC",
                "type": "color"
            },
            "300": {
                "value": "#7A94F6",
                "type": "color"
            },
            "400": {
                "value": "#4A6CE8",
                "type": "color"
            },
            "500": {
                "value": "#264BCF",
                "type": "color"
            },
            "600": {
                "value": "#253F9D",
                "type": "color"
            },
            "700": {
                "value": "#21316E",
                "type": "color"
            },
            "800": {
                "value": "#192348",
                "type": "color"
            },
            "900": {
                "value": "#12172C",
                "type": "color"
            }
        }
    }
}

Palettes built on #031F83

Color Lab

Pairs with #031F83

UI roles & guardrails

In real applications

Scales

Every model

Export