What color is #10237E?

#10237E is a dark, vivid blue. In RGB it is rgb(16, 35, 126), and in HSL hsl(230, 77%, 28%).

Is #10237E accessible as text?

On white, #10237E has a contrast ratio of 13.43:1 (passes WCAG AA for body text); on black it is 1.56:1 (fails). For text placed on #10237E, use white for the best readability.

What is the closest Tailwind color to #10237E?

The nearest Tailwind CSS token is indigo-900 (#312C85).

What colors go well with #10237E?

#10237E pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #7E6C10. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #10237E below.

Is #10237E good for buttons?

#10237E works well for buttons and highlights, but use white text on #10237E — black text only reaches 1.56:1, below the 4.5:1 needed for normal-size labels.

Is #10237E the same as CSS midnightblue?

No — #10237E is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#10237E Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #10237E

Not just a swatch — here's how #10237E works with other colors. Named schemes with #10237E in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #10237E Anchor #141210 Accent #DD965A Secondary #242933 Surface #F4ECE3

Midnight 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 #10237E Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #150342

Midnight 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 Midnight Blue.

Coastal Morning Lead · 5 colors

Lead #10237E Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Midnight 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 #10237E Secondary #7F4535 Surface #EED7C2 Accent #365246 Anchor #58223A

Midnight 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 #F8F4EF Accent #10237E Secondary #495675 Support #9D8F88 Ink #18140F

Midnight 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 Midnight Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #10237E 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 13/100

Cool

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

Softness 24/100

Low

Firm and assertive — carries weight and contrast.

Depth 71/100

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 27/100

Low

A faint retro warmth without tipping into sepia.

Luxury 70/100

High

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

Brand distinctiveness 59/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 45/100

Moderate

Workable accent with care around contrast.

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 #10237E

For UI

For branding

For interior

For fashion

People also use #10237E with

Teal Blue Indigo Olive Brown Gainsboro Prussian Blue

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 13.4:1. Use

Subtle surface Use #C6CDEF for cards and hover fills. Tint 80

Avoid beside #23107E — 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 #10237E 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: #10237E;
  --color-base-rgb: 16 35 126;
  --color-base-oklch: oklch(31.6% 0.154 266.8);
  --color-50: #F1F3FE;
  --color-100: #DAE0FB;
  --color-200: #B7C1F5;
  --color-300: #8696E9;
  --color-400: #596FD9;
  --color-500: #374DBE;
  --color-600: #314191;
  --color-700: #283366;
  --color-800: #1E2443;
  --color-900: #141829;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  midnight-blue: {
    50: '#F1F3FE',
    100: '#DAE0FB',
    200: '#B7C1F5',
    300: '#8696E9',
    400: '#596FD9',
    500: '#374DBE',
    600: '#314191',
    700: '#283366',
    800: '#1E2443',
    900: '#141829',
  },
}

$base: #10237E;
$base-ink: #FFFFFF;
$base-50: #F1F3FE;
$base-100: #DAE0FB;
$base-200: #B7C1F5;
$base-300: #8696E9;
$base-400: #596FD9;
$base-500: #374DBE;
$base-600: #314191;
$base-700: #283366;
$base-800: #1E2443;
$base-900: #141829;
$base-hover: #0D1C65;
$base-subtle: #A8B2E8;

{
    "color": {
        "base": {
            "value": "#10237E",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F3FE",
                "type": "color"
            },
            "100": {
                "value": "#DAE0FB",
                "type": "color"
            },
            "200": {
                "value": "#B7C1F5",
                "type": "color"
            },
            "300": {
                "value": "#8696E9",
                "type": "color"
            },
            "400": {
                "value": "#596FD9",
                "type": "color"
            },
            "500": {
                "value": "#374DBE",
                "type": "color"
            },
            "600": {
                "value": "#314191",
                "type": "color"
            },
            "700": {
                "value": "#283366",
                "type": "color"
            },
            "800": {
                "value": "#1E2443",
                "type": "color"
            },
            "900": {
                "value": "#141829",
                "type": "color"
            }
        }
    }
}

Palettes built on #10237E

Color Lab

Pairs with #10237E

UI roles & guardrails

In real applications

Scales

Every model

Export