What color is #1F3670?

#1F3670 is a dark blue. In RGB it is rgb(31, 54, 112), and in HSL hsl(223, 57%, 28%).

Is #1F3670 accessible as text?

On white, #1F3670 has a contrast ratio of 11.54:1 (passes WCAG AA for body text); on black it is 1.82:1 (fails). For text placed on #1F3670, use white for the best readability.

What is the closest Tailwind color to #1F3670?

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

What colors go well with #1F3670?

#1F3670 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #70591F. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #1F3670 below.

Is #1F3670 good for buttons?

#1F3670 works well for buttons and highlights, but use white text on #1F3670 — black text only reaches 1.82:1, below the 4.5:1 needed for normal-size labels.

Is #1F3670 the same as CSS midnightblue?

No — #1F3670 is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#1F3670 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #1F3670

Not just a swatch — here's how #1F3670 works with other colors. Named schemes with #1F3670 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #1F3670 Anchor #141210 Accent #DD965A Secondary #242933 Surface #F4ECE3

Yale 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 #1F3670 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #19163D

Yale 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 Yale Blue.

Coastal Morning Lead · 5 colors

Lead #1F3670 Accent #A5C4C2 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

Yale 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 #1F3670 Secondary #7F4536 Surface #EED7C2 Accent #365246 Anchor #58223A

Yale 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 #1F3670 Secondary #566076 Support #9D8F88 Ink #18140F

Yale 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 Yale Blue carrying the quiet middle.

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Color Lab

How #1F3670 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 25/100

Cool

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

Softness 31/100

Low

Firm and assertive — carries weight and contrast.

Depth 65/100

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 41/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 70/100

High

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

Brand distinctiveness 40/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 54/100

Moderate

Workable accent with care around contrast.

Surface fit 31/100

Low

Usable as a tinted surface in measured doses.

Print safety 81/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #1F3670

For UI

For branding

For interior

For fashion

People also use #1F3670 with

Teal Midnight Blue Coffee 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 11.5:1. Use

Subtle surface Use #CBD4E9 for cards and hover fills. Tint 80

Avoid beside #231F70 — 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 #1F3670 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: #1F3670;
  --color-base-rgb: 31 54 112;
  --color-base-oklch: oklch(34.9% 0.104 265.1);
  --color-50: #F3F5FC;
  --color-100: #DEE5F7;
  --color-200: #BFCCED;
  --color-300: #93A8DC;
  --color-400: #6A85C8;
  --color-500: #4865AD;
  --color-600: #3D5284;
  --color-700: #303D5E;
  --color-800: #232B3E;
  --color-900: #171B26;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  yale-blue: {
    50: '#F3F5FC',
    100: '#DEE5F7',
    200: '#BFCCED',
    300: '#93A8DC',
    400: '#6A85C8',
    500: '#4865AD',
    600: '#3D5284',
    700: '#303D5E',
    800: '#232B3E',
    900: '#171B26',
  },
}

$base: #1F3670;
$base-ink: #FFFFFF;
$base-50: #F3F5FC;
$base-100: #DEE5F7;
$base-200: #BFCCED;
$base-300: #93A8DC;
$base-400: #6A85C8;
$base-500: #4865AD;
$base-600: #3D5284;
$base-700: #303D5E;
$base-800: #232B3E;
$base-900: #171B26;
$base-hover: #192B5A;
$base-subtle: #B0BEE0;

{
    "color": {
        "base": {
            "value": "#1F3670",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F5FC",
                "type": "color"
            },
            "100": {
                "value": "#DEE5F7",
                "type": "color"
            },
            "200": {
                "value": "#BFCCED",
                "type": "color"
            },
            "300": {
                "value": "#93A8DC",
                "type": "color"
            },
            "400": {
                "value": "#6A85C8",
                "type": "color"
            },
            "500": {
                "value": "#4865AD",
                "type": "color"
            },
            "600": {
                "value": "#3D5284",
                "type": "color"
            },
            "700": {
                "value": "#303D5E",
                "type": "color"
            },
            "800": {
                "value": "#232B3E",
                "type": "color"
            },
            "900": {
                "value": "#171B26",
                "type": "color"
            }
        }
    }
}

Palettes built on #1F3670

Color Lab

Pairs with #1F3670

UI roles & guardrails

In real applications

Scales

Every model

Export