What color is #0F37BB?

#0F37BB is a medium, vivid blue. In RGB it is rgb(15, 55, 187), and in HSL hsl(226, 85%, 40%).

Is #0F37BB accessible as text?

On white, #0F37BB has a contrast ratio of 9.19:1 (passes WCAG AA for body text); on black it is 2.28:1 (fails). For text placed on #0F37BB, use white for the best readability.

What is the closest Tailwind color to #0F37BB?

The nearest Tailwind CSS token is blue-800 (#193CB8).

What colors go well with #0F37BB?

#0F37BB pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #BD940F. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0F37BB below.

Is #0F37BB good for buttons?

#0F37BB works well for buttons and highlights, but use white text on #0F37BB — black text only reaches 2.28:1, below the 4.5:1 needed for normal-size labels.

Is #0F37BB the same as CSS mediumblue?

No — #0F37BB is not the CSS named color mediumblue, but mediumblue (#0000CD) is the closest CSS named color.

#0F37BB Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0F37BB

Not just a swatch — here's how #0F37BB works with other colors. Named schemes with #0F37BB in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #0F37BB Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #3563D9

Egyptian 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 Egyptian Blue.

Coastal Morning Lead · 5 colors

Lead #0F37BB Accent #A5C4C2 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

Egyptian Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Berry & Cream Lead · 5 colors

Lead #0F37BB Surface #F6E5D8 Anchor #5B2144 Accent #E5C2CA Secondary #322B2F

Egyptian Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #0F37BB Secondary #5E739F Support #9D8F88 Ink #18140F

Egyptian 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 Egyptian Blue carrying the quiet middle.

Sunset Warmth Glow · 5 colors

Glow #0F37BB Secondary #E76A75 Accent #F79251 Anchor #573B58 Surface #F7E7D7

Egyptian Blue glows at the center of this sunset palette, joined by coral and gold, deepened by a plum anchor and cooled with cream.

Build a working theme in the generator →

Color Lab

How #0F37BB 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 9/100

Cool

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

Softness 26/100

Low

Firm and assertive — carries weight and contrast.

Depth 63/100

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 18/100

Very low

Clean and current — no dusty, aged cast.

Luxury 57/100

Moderate

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

Brand distinctiveness 81/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 66/100

High

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

Surface fit 13/100

Very low

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

Print safety 62/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #0F37BB

For UI

For branding

For interior

For fashion

People also use #0F37BB with

Picton Blue Egyptian Blue Dark Goldenrod 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 9.2:1. Use

Subtle surface Use #CED6F3 for cards and hover fills. Tint 80

Avoid beside #210FBD — 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 #0F37BB 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: #0F37BB;
  --color-base-rgb: 15 55 187;
  --color-base-oklch: oklch(41.6% 0.209 264.6);
  --color-50: #F0F4FE;
  --color-100: #D8E1FD;
  --color-200: #B4C4F9;
  --color-300: #819AEE;
  --color-400: #5373DF;
  --color-500: #3052C5;
  --color-600: #2C4596;
  --color-700: #25356A;
  --color-800: #1C2645;
  --color-900: #13182A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  egyptian-blue: {
    50: '#F0F4FE',
    100: '#D8E1FD',
    200: '#B4C4F9',
    300: '#819AEE',
    400: '#5373DF',
    500: '#3052C5',
    600: '#2C4596',
    700: '#25356A',
    800: '#1C2645',
    900: '#13182A',
  },
}

$base: #0F37BB;
$base-ink: #FFFFFF;
$base-50: #F0F4FE;
$base-100: #D8E1FD;
$base-200: #B4C4F9;
$base-300: #819AEE;
$base-400: #5373DF;
$base-500: #3052C5;
$base-600: #2C4596;
$base-700: #25356A;
$base-800: #1C2645;
$base-900: #13182A;
$base-hover: #0C2D97;
$base-subtle: #B3C1EF;

{
    "color": {
        "base": {
            "value": "#0F37BB",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F4FE",
                "type": "color"
            },
            "100": {
                "value": "#D8E1FD",
                "type": "color"
            },
            "200": {
                "value": "#B4C4F9",
                "type": "color"
            },
            "300": {
                "value": "#819AEE",
                "type": "color"
            },
            "400": {
                "value": "#5373DF",
                "type": "color"
            },
            "500": {
                "value": "#3052C5",
                "type": "color"
            },
            "600": {
                "value": "#2C4596",
                "type": "color"
            },
            "700": {
                "value": "#25356A",
                "type": "color"
            },
            "800": {
                "value": "#1C2645",
                "type": "color"
            },
            "900": {
                "value": "#13182A",
                "type": "color"
            }
        }
    }
}

Palettes built on #0F37BB

Color Lab

Pairs with #0F37BB

UI roles & guardrails

In real applications

Scales

Every model

Export