What color is #137CD7?

#137CD7 is a medium, vivid blue. In RGB it is rgb(19, 124, 215), and in HSL hsl(208, 84%, 46%).

Is #137CD7 accessible as text?

On white, #137CD7 has a contrast ratio of 4.29:1 (fails WCAG AA for body text); on black it is 4.89:1 (passes). For text placed on #137CD7, use black for the best readability.

What is the closest Tailwind color to #137CD7?

The nearest Tailwind CSS token is sky-600 (#0084D1).

What colors go well with #137CD7?

#137CD7 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #D86F13. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #137CD7 below.

Is #137CD7 good for buttons?

#137CD7 works well for buttons and highlights, but use black text on #137CD7 — white text only reaches 4.29:1, below the 4.5:1 needed for normal-size labels.

Is #137CD7 the same as CSS royalblue?

No — #137CD7 is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#137CD7 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #137CD7

Not just a swatch — here's how #137CD7 works with other colors. Named schemes with #137CD7 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #137CD7 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 #137CD7 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #51A2F7

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 #137CD7 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 #137CD7 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 #137CD7 Secondary #8BA8C8 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 #137CD7 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 5/100

Cool

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

Softness 41/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 44/100

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 35/100

Low

A faint retro warmth without tipping into sepia.

Luxury 47/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 44/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 94/100

Very high

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

Surface fit 15/100

Very low

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

Print safety 65/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #137CD7

For UI

For branding

For interior

For fashion

People also use #137CD7 with

Turquoise Medium Blue Ochre Gainsboro Charcoal

UI roles & guardrails

Primary action Too mid-tone for a filled button — darken for the fill. AA Large

Body text Do not use for body copy on light surfaces. Avoid

Large display Fine for headings 24px+ on white. Pass

Background Pair with #141310 text at 4.3:1. Use

Subtle surface Use #D3E5F4 for cards and hover fills. Tint 80

Avoid beside #133AD8 — 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 #137CD7 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: #137CD7;
  --color-base-rgb: 19 124 215;
  --color-base-oklch: oklch(58.0% 0.164 251.5);
  --color-50: #F0F8FE;
  --color-100: #D8ECFD;
  --color-200: #B4D8F8;
  --color-300: #81BBEE;
  --color-400: #539EDF;
  --color-500: #307FC4;
  --color-600: #2D6495;
  --color-700: #254A69;
  --color-800: #1C3245;
  --color-900: #131F2A;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  true-blue: {
    50: '#F0F8FE',
    100: '#D8ECFD',
    200: '#B4D8F8',
    300: '#81BBEE',
    400: '#539EDF',
    500: '#307FC4',
    600: '#2D6495',
    700: '#254A69',
    800: '#1C3245',
    900: '#131F2A',
  },
}

$base: #137CD7;
$base-ink: #141310;
$base-50: #F0F8FE;
$base-100: #D8ECFD;
$base-200: #B4D8F8;
$base-300: #81BBEE;
$base-400: #539EDF;
$base-500: #307FC4;
$base-600: #2D6495;
$base-700: #254A69;
$base-800: #1C3245;
$base-900: #131F2A;
$base-hover: #0F63AD;
$base-subtle: #BBD7F0;

{
    "color": {
        "base": {
            "value": "#137CD7",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F8FE",
                "type": "color"
            },
            "100": {
                "value": "#D8ECFD",
                "type": "color"
            },
            "200": {
                "value": "#B4D8F8",
                "type": "color"
            },
            "300": {
                "value": "#81BBEE",
                "type": "color"
            },
            "400": {
                "value": "#539EDF",
                "type": "color"
            },
            "500": {
                "value": "#307FC4",
                "type": "color"
            },
            "600": {
                "value": "#2D6495",
                "type": "color"
            },
            "700": {
                "value": "#254A69",
                "type": "color"
            },
            "800": {
                "value": "#1C3245",
                "type": "color"
            },
            "900": {
                "value": "#131F2A",
                "type": "color"
            }
        }
    }
}

Palettes built on #137CD7

Color Lab

Pairs with #137CD7

UI roles & guardrails

In real applications

Scales

Every model

Export