What color is #031B2E?

#031B2E is a very dark, vivid cyan-blue. In RGB it is rgb(3, 27, 46), and in HSL hsl(207, 88%, 10%).

Is #031B2E accessible as text?

On white, #031B2E has a contrast ratio of 17.50:1 (passes WCAG AA for body text); on black it is 1.20:1 (fails). For text placed on #031B2E, use white for the best readability.

What is the closest Tailwind color to #031B2E?

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

What colors go well with #031B2E?

#031B2E pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #301703. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #031B2E below.

Is #031B2E good for buttons?

#031B2E works well for buttons and highlights, but use white text on #031B2E — black text only reaches 1.20:1, below the 4.5:1 needed for normal-size labels.

Is #031B2E the same as CSS midnightblue?

No — #031B2E 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.

#031B2E Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #031B2E

Not just a swatch — here's how #031B2E works with other colors. Named schemes with #031B2E in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #031B2E Accent #A5C4C0 Surface #DEDBBF Secondary #9AA0A0 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 #031B2E 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 #031B2E Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #23394C

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 #031B2E Secondary #7F4438 Surface #E1DDC0 Accent #375245 Anchor #57233C

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 #031B2E Secondary #353D44 Support #969386 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 #031B2E 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 36/100

Cool

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

Softness 23/100

Low

Firm and assertive — carries weight and contrast.

Depth 75/100

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 24/100

Low

Clean and current — no dusty, aged cast.

Luxury 76/100

High

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

Brand distinctiveness 19/100

Very low

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

UI accent fit 13/100

Very low

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

Surface fit 56/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 89/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #031B2E

For UI

For branding

For interior

For fashion

People also use #031B2E 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 17.5:1. Use

Subtle surface Use #B4D4EE for cards and hover fills. Tint 80

Avoid beside #030D30 — 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 #031B2E 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: #031B2E;
  --color-base-rgb: 3 27 46;
  --color-base-oklch: oklch(21.5% 0.048 245.2);
  --color-50: #F0F8FE;
  --color-100: #D8ECFD;
  --color-200: #B2DAFA;
  --color-300: #7FBDF0;
  --color-400: #50A0E2;
  --color-500: #2D82C8;
  --color-600: #2A6698;
  --color-700: #244B6B;
  --color-800: #1B3346;
  --color-900: #13202B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  graphite: {
    50: '#F0F8FE',
    100: '#D8ECFD',
    200: '#B2DAFA',
    300: '#7FBDF0',
    400: '#50A0E2',
    500: '#2D82C8',
    600: '#2A6698',
    700: '#244B6B',
    800: '#1B3346',
    900: '#13202B',
  },
}

$base: #031B2E;
$base-ink: #FFFFFF;
$base-50: #F0F8FE;
$base-100: #D8ECFD;
$base-200: #B2DAFA;
$base-300: #7FBDF0;
$base-400: #50A0E2;
$base-500: #2D82C8;
$base-600: #2A6698;
$base-700: #244B6B;
$base-800: #1B3346;
$base-900: #13202B;
$base-hover: #021626;
$base-subtle: #8CBFE8;

{
    "color": {
        "base": {
            "value": "#031B2E",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F8FE",
                "type": "color"
            },
            "100": {
                "value": "#D8ECFD",
                "type": "color"
            },
            "200": {
                "value": "#B2DAFA",
                "type": "color"
            },
            "300": {
                "value": "#7FBDF0",
                "type": "color"
            },
            "400": {
                "value": "#50A0E2",
                "type": "color"
            },
            "500": {
                "value": "#2D82C8",
                "type": "color"
            },
            "600": {
                "value": "#2A6698",
                "type": "color"
            },
            "700": {
                "value": "#244B6B",
                "type": "color"
            },
            "800": {
                "value": "#1B3346",
                "type": "color"
            },
            "900": {
                "value": "#13202B",
                "type": "color"
            }
        }
    }
}

Palettes built on #031B2E

Color Lab

Pairs with #031B2E

UI roles & guardrails

In real applications

Scales

Every model

Export