What color is #033A87?

#033A87 is a dark, vivid blue. In RGB it is rgb(3, 58, 135), and in HSL hsl(215, 96%, 27%).

Is #033A87 accessible as text?

On white, #033A87 has a contrast ratio of 10.72:1 (passes WCAG AA for body text); on black it is 1.96:1 (fails). For text placed on #033A87, use white for the best readability.

What is the closest Tailwind color to #033A87?

The nearest Tailwind CSS token is blue-900 (#1C398E).

What colors go well with #033A87?

#033A87 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #875003. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #033A87 below.

Is #033A87 good for buttons?

#033A87 works well for buttons and highlights, but use white text on #033A87 — black text only reaches 1.96:1, below the 4.5:1 needed for normal-size labels.

Is #033A87 the same as CSS darkslateblue?

No — #033A87 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#033A87 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #033A87

Not just a swatch — here's how #033A87 works with other colors. Named schemes with #033A87 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #033A87 Anchor #141210 Accent #ADAE53 Secondary #232933 Surface #F0EEE3

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 #033A87 Anchor #2A2A2E Secondary #6E6E74 Surface #E9E7DA Accent #18184E

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 #033A87 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.

Vintage Leather Lead · 5 colors

Lead #033A87 Secondary #7F4536 Surface #E1DDC1 Accent #375246 Anchor #57223A

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 #033A87 Secondary #556782 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 #033A87 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 14/100

Cool

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

Softness 29/100

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 33/100

Low

A faint retro warmth without tipping into sepia.

Luxury 67/100

High

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

Brand distinctiveness 54/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 64/100

High

Strong interactive accent — visible and can carry a legible label.

Surface fit 19/100

Very low

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

Print safety 73/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #033A87

For UI

For branding

For interior

For fashion

People also use #033A87 with

Light Sea Green Phthalo Blue Russet 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 10.7:1. Use

Subtle surface Use #C0D5F4 for cards and hover fills. Tint 80

Avoid beside #030E87 — 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 #033A87 at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

A working theme, generated in seconds.

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: #033A87;
  --color-base-rgb: 3 58 135;
  --color-base-oklch: oklch(36.9% 0.140 259.1);
  --color-50: #F0F6FE;
  --color-100: #D8E7FD;
  --color-200: #B1D0FC;
  --color-300: #7AADF6;
  --color-400: #4A8CE8;
  --color-500: #266CCF;
  --color-600: #25579D;
  --color-700: #21416E;
  --color-800: #192D48;
  --color-900: #121C2C;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  yale-blue: {
    50: '#F0F6FE',
    100: '#D8E7FD',
    200: '#B1D0FC',
    300: '#7AADF6',
    400: '#4A8CE8',
    500: '#266CCF',
    600: '#25579D',
    700: '#21416E',
    800: '#192D48',
    900: '#121C2C',
  },
}

$base: #033A87;
$base-ink: #FFFFFF;
$base-50: #F0F6FE;
$base-100: #D8E7FD;
$base-200: #B1D0FC;
$base-300: #7AADF6;
$base-400: #4A8CE8;
$base-500: #266CCF;
$base-600: #25579D;
$base-700: #21416E;
$base-800: #192D48;
$base-900: #121C2C;
$base-hover: #022E6C;
$base-subtle: #9EC0F0;

{
    "color": {
        "base": {
            "value": "#033A87",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F6FE",
                "type": "color"
            },
            "100": {
                "value": "#D8E7FD",
                "type": "color"
            },
            "200": {
                "value": "#B1D0FC",
                "type": "color"
            },
            "300": {
                "value": "#7AADF6",
                "type": "color"
            },
            "400": {
                "value": "#4A8CE8",
                "type": "color"
            },
            "500": {
                "value": "#266CCF",
                "type": "color"
            },
            "600": {
                "value": "#25579D",
                "type": "color"
            },
            "700": {
                "value": "#21416E",
                "type": "color"
            },
            "800": {
                "value": "#192D48",
                "type": "color"
            },
            "900": {
                "value": "#121C2C",
                "type": "color"
            }
        }
    }
}

Palettes built on #033A87

Color Lab

Pairs with #033A87

UI roles & guardrails

In real applications

Scales

Every model

Export