What color is #217BC0?

#217BC0 is a medium, vivid cyan-blue. In RGB it is rgb(33, 123, 192), and in HSL hsl(206, 71%, 44%).

Is #217BC0 accessible as text?

On white, #217BC0 has a contrast ratio of 4.51:1 (passes WCAG AA for body text); on black it is 4.66:1 (passes). For text placed on #217BC0, use black for the best readability.

What is the closest Tailwind color to #217BC0?

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

What colors go well with #217BC0?

#217BC0 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #C06621. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #217BC0 below.

Is #217BC0 good for buttons?

#217BC0 works for buttons; black text has the higher contrast, so prefer it for labels.

Is #217BC0 the same as CSS steelblue?

No — #217BC0 is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#217BC0 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #217BC0

Not just a swatch — here's how #217BC0 works with other colors. Named schemes with #217BC0 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #217BC0 Accent #A5C4C0 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 #217BC0 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #57A0E0

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 #217BC0 Secondary #7F4438 Surface #E1DDC0 Accent #375245 Anchor #57233C

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 #217BC0 Surface #EDE9D6 Anchor #5A2245 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 #217BC0 Secondary #89A4BD Support #969386 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.

Build a working theme in the generator →

Color Lab

How #217BC0 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 12/100

Cool

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

Softness 44/100

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 45/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 50/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 36/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 98/100

Very high

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

Surface fit 18/100

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 #217BC0

For UI

For branding

For interior

For fashion

People also use #217BC0 with

Turquoise 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 4.5:1. Use

Subtle surface Use #D4E4F1 for cards and hover fills. Tint 80

Avoid beside #2146C0 — 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 #217BC0 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: #217BC0;
  --color-base-rgb: 33 123 192;
  --color-base-oklch: oklch(56.6% 0.134 247.0);
  --color-50: #F1F8FD;
  --color-100: #DBEDFA;
  --color-200: #B9DAF3;
  --color-300: #8ABEE5;
  --color-400: #5EA1D4;
  --color-500: #3C83B9;
  --color-600: #35678D;
  --color-700: #2B4B64;
  --color-800: #1F3342;
  --color-900: #152028;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  true-blue: {
    50: '#F1F8FD',
    100: '#DBEDFA',
    200: '#B9DAF3',
    300: '#8ABEE5',
    400: '#5EA1D4',
    500: '#3C83B9',
    600: '#35678D',
    700: '#2B4B64',
    800: '#1F3342',
    900: '#152028',
  },
}

$base: #217BC0;
$base-ink: #141310;
$base-50: #F1F8FD;
$base-100: #DBEDFA;
$base-200: #B9DAF3;
$base-300: #8ABEE5;
$base-400: #5EA1D4;
$base-500: #3C83B9;
$base-600: #35678D;
$base-700: #2B4B64;
$base-800: #1F3342;
$base-900: #152028;
$base-hover: #1A6299;
$base-subtle: #BDD7EB;

{
    "color": {
        "base": {
            "value": "#217BC0",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F8FD",
                "type": "color"
            },
            "100": {
                "value": "#DBEDFA",
                "type": "color"
            },
            "200": {
                "value": "#B9DAF3",
                "type": "color"
            },
            "300": {
                "value": "#8ABEE5",
                "type": "color"
            },
            "400": {
                "value": "#5EA1D4",
                "type": "color"
            },
            "500": {
                "value": "#3C83B9",
                "type": "color"
            },
            "600": {
                "value": "#35678D",
                "type": "color"
            },
            "700": {
                "value": "#2B4B64",
                "type": "color"
            },
            "800": {
                "value": "#1F3342",
                "type": "color"
            },
            "900": {
                "value": "#152028",
                "type": "color"
            }
        }
    }
}

Palettes built on #217BC0

Color Lab

Pairs with #217BC0

UI roles & guardrails

In real applications

Scales

Every model

Export