What color is #03375F?

#03375F is a dark, vivid cyan-blue. In RGB it is rgb(3, 55, 95), and in HSL hsl(206, 94%, 19%).

Is #03375F accessible as text?

On white, #03375F has a contrast ratio of 12.24:1 (passes WCAG AA for body text); on black it is 1.72:1 (fails). For text placed on #03375F, use white for the best readability.

What is the closest Tailwind color to #03375F?

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

What colors go well with #03375F?

#03375F pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5E2A03. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #03375F below.

Is #03375F good for buttons?

#03375F works well for buttons and highlights, but use white text on #03375F — black text only reaches 1.72:1, below the 4.5:1 needed for normal-size labels.

Is #03375F the same as CSS midnightblue?

No — #03375F is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#03375F Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #03375F

Not just a swatch — here's how #03375F works with other colors. Named schemes with #03375F in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #03375F Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Yale Blue 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 #03375F Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Yale Blue 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 #03375F Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #2F587E

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

Vintage Leather Lead · 5 colors

Lead #03375F Secondary #7F4438 Surface #E1DDC0 Accent #375245 Anchor #57233B

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 #F6F4EF Accent #03375F Secondary #4E5C6B Support #969386 Ink #16140F

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.

Build a working theme in the generator →

Color Lab

How #03375F 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 26/100

Cool

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

Softness 30/100

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 40/100

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 33/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 44/100

Moderate

Workable accent with care around contrast.

Surface fit 37/100

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 #03375F

For UI

For branding

For interior

For fashion

People also use #03375F with

Teal Green Navy Espresso 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 12.2:1. Use

Subtle surface Use #BAD9F2 for cards and hover fills. Tint 80

Avoid beside #03185E — 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 #03375F 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: #03375F;
  --color-base-rgb: 3 55 95;
  --color-base-oklch: oklch(32.9% 0.087 248.4);
  --color-50: #F0F8FE;
  --color-100: #D8EDFD;
  --color-200: #B1DBFC;
  --color-300: #7BC0F4;
  --color-400: #4BA3E7;
  --color-500: #2885CD;
  --color-600: #26699B;
  --color-700: #214C6D;
  --color-800: #1A3347;
  --color-900: #12202B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  yale-blue: {
    50: '#F0F8FE',
    100: '#D8EDFD',
    200: '#B1DBFC',
    300: '#7BC0F4',
    400: '#4BA3E7',
    500: '#2885CD',
    600: '#26699B',
    700: '#214C6D',
    800: '#1A3347',
    900: '#12202B',
  },
}

$base: #03375F;
$base-ink: #FFFFFF;
$base-50: #F0F8FE;
$base-100: #D8EDFD;
$base-200: #B1DBFC;
$base-300: #7BC0F4;
$base-400: #4BA3E7;
$base-500: #2885CD;
$base-600: #26699B;
$base-700: #214C6D;
$base-800: #1A3347;
$base-900: #12202B;
$base-hover: #022C4B;
$base-subtle: #95C7ED;

{
    "color": {
        "base": {
            "value": "#03375F",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F8FE",
                "type": "color"
            },
            "100": {
                "value": "#D8EDFD",
                "type": "color"
            },
            "200": {
                "value": "#B1DBFC",
                "type": "color"
            },
            "300": {
                "value": "#7BC0F4",
                "type": "color"
            },
            "400": {
                "value": "#4BA3E7",
                "type": "color"
            },
            "500": {
                "value": "#2885CD",
                "type": "color"
            },
            "600": {
                "value": "#26699B",
                "type": "color"
            },
            "700": {
                "value": "#214C6D",
                "type": "color"
            },
            "800": {
                "value": "#1A3347",
                "type": "color"
            },
            "900": {
                "value": "#12202B",
                "type": "color"
            }
        }
    }
}