What color is #145BF5?

#145BF5 is a medium, vivid blue. In RGB it is rgb(20, 91, 245), and in HSL hsl(221, 92%, 52%).

Is #145BF5 accessible as text?

On white, #145BF5 has a contrast ratio of 5.46:1 (passes WCAG AA for body text); on black it is 3.84:1 (fails). For text placed on #145BF5, use white for the best readability.

What is the closest Tailwind color to #145BF5?

The nearest Tailwind CSS token is blue-600 (#155DFC).

What colors go well with #145BF5?

#145BF5 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #F5AE14. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #145BF5 below.

Is #145BF5 good for buttons?

#145BF5 works well for buttons and highlights, but use white text on #145BF5 — black text only reaches 3.84:1, below the 4.5:1 needed for normal-size labels.

Is #145BF5 the same as CSS royalblue?

No — #145BF5 is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#145BF5 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #145BF5

Not just a swatch — here's how #145BF5 works with other colors. Named schemes with #145BF5 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #145BF5 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #4587FF

Neon 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 Neon Blue.

Coastal Morning Lead · 5 colors

Lead #145BF5 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

Neon 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 #145BF5 Surface #F6E5D8 Anchor #5A2144 Accent #E4C2CA Secondary #322B2F

Neon 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 #145BF5 Secondary #7C97CB Support #9D8F88 Ink #18140F

Neon 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 Neon Blue carrying the quiet middle.

Sunset Warmth Glow · 5 colors

Glow #145BF5 Secondary #E76A75 Accent #F79151 Anchor #573B58 Surface #EEEBD6

Neon 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 #145BF5 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 8/100

Cool

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

Softness 29/100

Low

Firm and assertive — carries weight and contrast.

Depth 51/100

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 11/100

Very low

Clean and current — no dusty, aged cast.

Luxury 45/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 92/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 67/100

High

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

Surface fit 11/100

Very low

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

Print safety 55/100

Moderate

Prints close, with a slight loss of vibrancy.

Pairs with #145BF5

For UI

For branding

For interior

For fashion

People also use #145BF5 with

Bright Sky Han Purple Goldenrod 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 5.5:1. Use

Subtle surface Use #D6E1F7 for cards and hover fills. Tint 80

Avoid beside #1814F5 — 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 #145BF5 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: #145BF5;
  --color-base-rgb: 20 91 245;
  --color-base-oklch: oklch(53.6% 0.239 262.8);
  --color-50: #F0F5FE;
  --color-100: #D8E4FD;
  --color-200: #B1C8FC;
  --color-300: #7CA2F3;
  --color-400: #4D7DE5;
  --color-500: #295DCB;
  --color-600: #284C9A;
  --color-700: #223A6D;
  --color-800: #1A2847;
  --color-900: #121A2B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  neon-blue: {
    50: '#F0F5FE',
    100: '#D8E4FD',
    200: '#B1C8FC',
    300: '#7CA2F3',
    400: '#4D7DE5',
    500: '#295DCB',
    600: '#284C9A',
    700: '#223A6D',
    800: '#1A2847',
    900: '#121A2B',
  },
}

$base: #145BF5;
$base-ink: #FFFFFF;
$base-50: #F0F5FE;
$base-100: #D8E4FD;
$base-200: #B1C8FC;
$base-300: #7CA2F3;
$base-400: #4D7DE5;
$base-500: #295DCB;
$base-600: #284C9A;
$base-700: #223A6D;
$base-800: #1A2847;
$base-900: #121A2B;
$base-hover: #0846CC;
$base-subtle: #C1D1F4;

{
    "color": {
        "base": {
            "value": "#145BF5",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F5FE",
                "type": "color"
            },
            "100": {
                "value": "#D8E4FD",
                "type": "color"
            },
            "200": {
                "value": "#B1C8FC",
                "type": "color"
            },
            "300": {
                "value": "#7CA2F3",
                "type": "color"
            },
            "400": {
                "value": "#4D7DE5",
                "type": "color"
            },
            "500": {
                "value": "#295DCB",
                "type": "color"
            },
            "600": {
                "value": "#284C9A",
                "type": "color"
            },
            "700": {
                "value": "#223A6D",
                "type": "color"
            },
            "800": {
                "value": "#1A2847",
                "type": "color"
            },
            "900": {
                "value": "#121A2B",
                "type": "color"
            }
        }
    }
}

Palettes built on #145BF5

Color Lab

Pairs with #145BF5

UI roles & guardrails

In real applications

Scales

Every model

Export