What color is #2370BE?

#2370BE is a medium blue. In RGB it is rgb(35, 112, 190), and in HSL hsl(210, 69%, 44%).

Is #2370BE accessible as text?

On white, #2370BE has a contrast ratio of 5.08:1 (passes WCAG AA for body text); on black it is 4.13:1 (fails). For text placed on #2370BE, use white for the best readability.

What is the closest Tailwind color to #2370BE?

The nearest Tailwind CSS token is sky-700 (#0069A8).

What colors go well with #2370BE?

#2370BE pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #BE7023. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #2370BE below.

Is #2370BE good for buttons?

#2370BE works well for buttons and highlights, but use white text on #2370BE — black text only reaches 4.13:1, below the 4.5:1 needed for normal-size labels.

Is #2370BE the same as CSS royalblue?

No — #2370BE is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#2370BE Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #2370BE

Not just a swatch — here's how #2370BE works with other colors. Named schemes with #2370BE in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #2370BE Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

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

Tech Product Signal · 5 colors

Signal #2370BE Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #5495DE

True 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 True Blue.

Vintage Leather Lead · 5 colors

Lead #2370BE Secondary #7F4537 Surface #E1DDC0 Accent #375245 Anchor #57233B

True 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.

Berry & Cream Lead · 5 colors

Lead #2370BE Surface #EDE9D6 Anchor #5A2145 Accent #E4C2CB Secondary #322B2F

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

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #2370BE Secondary #839BB7 Support #959386 Ink #16140F

True 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 True Blue carrying the quiet middle.

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Color Lab

How #2370BE 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 11/100

Cool

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

Softness 41/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 47/100

Moderate

Mid depth — usable as an accent or a muted ground.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 43/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 52/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 38/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 100/100

Very 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 70/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #2370BE

For UI

For branding

For interior

For fashion

People also use #2370BE with

Turquoise Egyptian Blue Copper Gainsboro Charcoal

UI roles & guardrails

Primary action Safe as a filled button with white label. AA

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 5.1:1. Use

Subtle surface Use #D4E2F1 for cards and hover fills. Tint 80

Avoid beside #233DBE — 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 #2370BE 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: #2370BE;
  --color-base-rgb: 35 112 190;
  --color-base-oklch: oklch(54.0% 0.142 252.5);
  --color-50: #F2F7FD;
  --color-100: #DCEBF9;
  --color-200: #BAD6F2;
  --color-300: #8BB8E4;
  --color-400: #6099D2;
  --color-500: #3E7AB7;
  --color-600: #36618C;
  --color-700: #2C4763;
  --color-800: #203041;
  --color-900: #151F28;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  true-blue: {
    50: '#F2F7FD',
    100: '#DCEBF9',
    200: '#BAD6F2',
    300: '#8BB8E4',
    400: '#6099D2',
    500: '#3E7AB7',
    600: '#36618C',
    700: '#2C4763',
    800: '#203041',
    900: '#151F28',
  },
}

$base: #2370BE;
$base-ink: #FFFFFF;
$base-50: #F2F7FD;
$base-100: #DCEBF9;
$base-200: #BAD6F2;
$base-300: #8BB8E4;
$base-400: #6099D2;
$base-500: #3E7AB7;
$base-600: #36618C;
$base-700: #2C4763;
$base-800: #203041;
$base-900: #151F28;
$base-hover: #1C5A98;
$base-subtle: #BED4EB;

{
    "color": {
        "base": {
            "value": "#2370BE",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F7FD",
                "type": "color"
            },
            "100": {
                "value": "#DCEBF9",
                "type": "color"
            },
            "200": {
                "value": "#BAD6F2",
                "type": "color"
            },
            "300": {
                "value": "#8BB8E4",
                "type": "color"
            },
            "400": {
                "value": "#6099D2",
                "type": "color"
            },
            "500": {
                "value": "#3E7AB7",
                "type": "color"
            },
            "600": {
                "value": "#36618C",
                "type": "color"
            },
            "700": {
                "value": "#2C4763",
                "type": "color"
            },
            "800": {
                "value": "#203041",
                "type": "color"
            },
            "900": {
                "value": "#151F28",
                "type": "color"
            }
        }
    }
}

Palettes built on #2370BE

Color Lab

Pairs with #2370BE

UI roles & guardrails

In real applications

Scales

Every model

Export