What color is #203F69?

#203F69 is a dark blue. In RGB it is rgb(32, 63, 105), and in HSL hsl(215, 53%, 27%).

Is #203F69 accessible as text?

On white, #203F69 has a contrast ratio of 10.63:1 (passes WCAG AA for body text); on black it is 1.98:1 (fails). For text placed on #203F69, use white for the best readability.

What is the closest Tailwind color to #203F69?

The nearest Tailwind CSS token is sky-900 (#024A70).

What colors go well with #203F69?

#203F69 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #694B20. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #203F69 below.

Is #203F69 good for buttons?

#203F69 works well for buttons and highlights, but use white text on #203F69 — black text only reaches 1.98:1, below the 4.5:1 needed for normal-size labels.

Is #203F69 the same as CSS darkslategray?

No — #203F69 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#203F69 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #203F69

Not just a swatch — here's how #203F69 works with other colors. Named schemes with #203F69 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #203F69 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 #203F69 Secondary #AEB4B8 Surface #F1F2F0 Support #7D93A6 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 #203F69 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #446189

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 #203F69 Secondary #7F4537 Surface #E1DDC1 Accent #375246 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 #203F69 Secondary #5B6676 Support #9D8F89 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 #203F69 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 28/100

Cool

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

Softness 34/100

Low

Middle-weight — neither delicate nor heavy.

Depth 62/100

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 43/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 67/100

High

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

Brand distinctiveness 32/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 55/100

Moderate

Workable accent with care around contrast.

Surface fit 36/100

Low

Usable as a tinted surface in measured doses.

Print safety 83/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #203F69

For UI

For branding

For interior

For fashion

People also use #203F69 with

Dark Cyan Midnight Blue Sepia 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 10.6:1. Use

Subtle surface Use #CCD7E8 for cards and hover fills. Tint 80

Avoid beside #202669 — 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 #203F69 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: #203F69;
  --color-base-rgb: 32 63 105;
  --color-base-oklch: oklch(36.6% 0.082 256.6);
  --color-50: #F3F7FC;
  --color-100: #DFE9F6;
  --color-200: #C1D3EC;
  --color-300: #95B2DA;
  --color-400: #6D92C5;
  --color-500: #4C73A9;
  --color-600: #405B82;
  --color-700: #32445D;
  --color-800: #242E3D;
  --color-900: #171D26;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  yale-blue: {
    50: '#F3F7FC',
    100: '#DFE9F6',
    200: '#C1D3EC',
    300: '#95B2DA',
    400: '#6D92C5',
    500: '#4C73A9',
    600: '#405B82',
    700: '#32445D',
    800: '#242E3D',
    900: '#171D26',
  },
}

$base: #203F69;
$base-ink: #FFFFFF;
$base-50: #F3F7FC;
$base-100: #DFE9F6;
$base-200: #C1D3EC;
$base-300: #95B2DA;
$base-400: #6D92C5;
$base-500: #4C73A9;
$base-600: #405B82;
$base-700: #32445D;
$base-800: #242E3D;
$base-900: #171D26;
$base-hover: #1A3254;
$base-subtle: #B1C3DE;

{
    "color": {
        "base": {
            "value": "#203F69",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F7FC",
                "type": "color"
            },
            "100": {
                "value": "#DFE9F6",
                "type": "color"
            },
            "200": {
                "value": "#C1D3EC",
                "type": "color"
            },
            "300": {
                "value": "#95B2DA",
                "type": "color"
            },
            "400": {
                "value": "#6D92C5",
                "type": "color"
            },
            "500": {
                "value": "#4C73A9",
                "type": "color"
            },
            "600": {
                "value": "#405B82",
                "type": "color"
            },
            "700": {
                "value": "#32445D",
                "type": "color"
            },
            "800": {
                "value": "#242E3D",
                "type": "color"
            },
            "900": {
                "value": "#171D26",
                "type": "color"
            }
        }
    }
}