What color is #001B35?

#001B35 is a very dark, vivid blue. In RGB it is rgb(0, 27, 53), and in HSL hsl(209, 100%, 10%).

Is #001B35 accessible as text?

On white, #001B35 has a contrast ratio of 17.38:1 (passes WCAG AA for body text); on black it is 1.21:1 (fails). For text placed on #001B35, use white for the best readability.

What is the closest Tailwind color to #001B35?

The nearest Tailwind CSS token is mist-900 (#161B1D).

What colors go well with #001B35?

#001B35 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #331900. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #001B35 below.

Is #001B35 good for buttons?

#001B35 works well for buttons and highlights, but use white text on #001B35 — black text only reaches 1.21:1, below the 4.5:1 needed for normal-size labels.

Is #001B35 the same as CSS midnightblue?

No — #001B35 is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#001B35 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #001B35

Not just a swatch — here's how #001B35 works with other colors. Named schemes with #001B35 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #001B35 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Graphite 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 #001B35 Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Graphite 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 #001B35 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #203953

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

Vintage Leather Lead · 5 colors

Lead #001B35 Secondary #7F4538 Surface #E1DDC0 Accent #375245 Anchor #57233B

Graphite 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 #001B35 Secondary #343E48 Support #959386 Ink #16140F

Graphite 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 Graphite carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #001B35 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 33/100

Cool

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

Softness 22/100

Low

Firm and assertive — carries weight and contrast.

Depth 76/100

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 26/100

Low

A faint retro warmth without tipping into sepia.

Luxury 77/100

High

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

Brand distinctiveness 24/100

Low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 14/100

Very low

Weak as an action color — too pale, too dark or too muted to signal.

Surface fit 52/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 87/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #001B35

For UI

For branding

For interior

For fashion

People also use #001B35 with

Castleton Green Jet Black Graphite 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 17.4:1. Use

Subtle surface Use #B0D2F2 for cards and hover fills. Tint 80

Avoid beside #000933 — 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 #001B35 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: #001B35;
  --color-base-rgb: 0 27 53;
  --color-base-oklch: oklch(21.8% 0.061 249.6);
  --color-50: #F0F8FE;
  --color-100: #D8EBFD;
  --color-200: #B1D7FC;
  --color-300: #77BAF8;
  --color-400: #469CEC;
  --color-500: #227DD2;
  --color-600: #23639F;
  --color-700: #1F4970;
  --color-800: #183148;
  --color-900: #111F2C;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  graphite: {
    50: '#F0F8FE',
    100: '#D8EBFD',
    200: '#B1D7FC',
    300: '#77BAF8',
    400: '#469CEC',
    500: '#227DD2',
    600: '#23639F',
    700: '#1F4970',
    800: '#183148',
    900: '#111F2C',
  },
}

$base: #001B35;
$base-ink: #FFFFFF;
$base-50: #F0F8FE;
$base-100: #D8EBFD;
$base-200: #B1D7FC;
$base-300: #77BAF8;
$base-400: #469CEC;
$base-500: #227DD2;
$base-600: #23639F;
$base-700: #1F4970;
$base-800: #183148;
$base-900: #111F2C;
$base-hover: #001529;
$base-subtle: #86BCEE;

{
    "color": {
        "base": {
            "value": "#001B35",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F8FE",
                "type": "color"
            },
            "100": {
                "value": "#D8EBFD",
                "type": "color"
            },
            "200": {
                "value": "#B1D7FC",
                "type": "color"
            },
            "300": {
                "value": "#77BAF8",
                "type": "color"
            },
            "400": {
                "value": "#469CEC",
                "type": "color"
            },
            "500": {
                "value": "#227DD2",
                "type": "color"
            },
            "600": {
                "value": "#23639F",
                "type": "color"
            },
            "700": {
                "value": "#1F4970",
                "type": "color"
            },
            "800": {
                "value": "#183148",
                "type": "color"
            },
            "900": {
                "value": "#111F2C",
                "type": "color"
            }
        }
    }
}