What color is #0358CF?

#0358CF is a medium, vivid blue. In RGB it is rgb(3, 88, 207), and in HSL hsl(215, 97%, 41%).

Is #0358CF accessible as text?

On white, #0358CF has a contrast ratio of 6.36:1 (passes WCAG AA for body text); on black it is 3.30:1 (fails). For text placed on #0358CF, use white for the best readability.

What is the closest Tailwind color to #0358CF?

The nearest Tailwind CSS token is blue-700 (#1447E6).

What colors go well with #0358CF?

#0358CF pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #CE7903. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0358CF below.

Is #0358CF good for buttons?

#0358CF works well for buttons and highlights, but use white text on #0358CF — black text only reaches 3.30:1, below the 4.5:1 needed for normal-size labels.

Is #0358CF the same as CSS royalblue?

No — #0358CF is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#0358CF Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0358CF

Not just a swatch — here's how #0358CF works with other colors. Named schemes with #0358CF in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #0358CF Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #3E80ED

Cerulean is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Cerulean.

Coastal Morning Lead · 5 colors

Lead #0358CF Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Cerulean 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 #0358CF Surface #F6E5D8 Anchor #5A2144 Accent #E4C2CA Secondary #322B2F

Cerulean 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 #0358CF Secondary #728CB5 Support #9D8F88 Ink #16140F

Cerulean 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 Cerulean carrying the quiet middle.

Sunset Warmth Glow · 5 colors

Glow #0358CF Secondary #E76A76 Accent #F79152 Anchor #573B58 Surface #EEEBD6

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

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Color Lab

How #0358CF 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 7/100

Cool

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

Softness 32/100

Low

Firm and assertive — carries weight and contrast.

Depth 54/100

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 24/100

Low

Clean and current — no dusty, aged cast.

Luxury 52/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 76/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 86/100

Very high

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

Surface fit 8/100

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 #0358CF

For UI

For branding

For interior

For fashion

People also use #0358CF with

Cyan Medium 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 6.4:1. Use

Subtle surface Use #CCDDF6 for cards and hover fills. Tint 80

Avoid beside #0314CE — 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 #0358CF 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: #0358CF;
  --color-base-rgb: 3 88 207;
  --color-base-oklch: oklch(49.5% 0.197 259.8);
  --color-50: #F0F6FE;
  --color-100: #D8E7FD;
  --color-200: #B1D0FC;
  --color-300: #79ADF6;
  --color-400: #498CE9;
  --color-500: #256CD0;
  --color-600: #25579D;
  --color-700: #20416F;
  --color-800: #192D48;
  --color-900: #111C2C;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  cerulean: {
    50: '#F0F6FE',
    100: '#D8E7FD',
    200: '#B1D0FC',
    300: '#79ADF6',
    400: '#498CE9',
    500: '#256CD0',
    600: '#25579D',
    700: '#20416F',
    800: '#192D48',
    900: '#111C2C',
  },
}

$base: #0358CF;
$base-ink: #FFFFFF;
$base-50: #F0F6FE;
$base-100: #D8E7FD;
$base-200: #B1D0FC;
$base-300: #79ADF6;
$base-400: #498CE9;
$base-500: #256CD0;
$base-600: #25579D;
$base-700: #20416F;
$base-800: #192D48;
$base-900: #111C2C;
$base-hover: #0346A5;
$base-subtle: #B1CCF3;

{
    "color": {
        "base": {
            "value": "#0358CF",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F6FE",
                "type": "color"
            },
            "100": {
                "value": "#D8E7FD",
                "type": "color"
            },
            "200": {
                "value": "#B1D0FC",
                "type": "color"
            },
            "300": {
                "value": "#79ADF6",
                "type": "color"
            },
            "400": {
                "value": "#498CE9",
                "type": "color"
            },
            "500": {
                "value": "#256CD0",
                "type": "color"
            },
            "600": {
                "value": "#25579D",
                "type": "color"
            },
            "700": {
                "value": "#20416F",
                "type": "color"
            },
            "800": {
                "value": "#192D48",
                "type": "color"
            },
            "900": {
                "value": "#111C2C",
                "type": "color"
            }
        }
    }
}