What color is #537FBC?

#537FBC is a medium blue. In RGB it is rgb(83, 127, 188), and in HSL hsl(215, 44%, 53%).

Is #537FBC accessible as text?

On white, #537FBC has a contrast ratio of 4.09:1 (fails WCAG AA for body text); on black it is 5.13:1 (passes). For text placed on #537FBC, use black for the best readability.

What is the closest Tailwind color to #537FBC?

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

What colors go well with #537FBC?

#537FBC pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #BC9052. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #537FBC below.

Is #537FBC good for buttons?

#537FBC works well for buttons and highlights, but use black text on #537FBC — white text only reaches 4.09:1, below the 4.5:1 needed for normal-size labels.

Is #537FBC the same as CSS steelblue?

No — #537FBC is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#537FBC Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #537FBC

Not just a swatch — here's how #537FBC works with other colors. Named schemes with #537FBC in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #537FBC Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Glaucous 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 #537FBC Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #7BA4DD

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

Vintage Leather Lead · 5 colors

Lead #537FBC Secondary #7F4537 Surface #E1DDC1 Accent #375246 Anchor #57233B

Glaucous 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 #537FBC Surface #EDE9D6 Anchor #5A2145 Accent #E4C2CA Secondary #322B2F

Glaucous 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 #537FBC Secondary #9AAAC0 Support #9D8F89 Ink #16140F

Glaucous 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 Glaucous carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #537FBC 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 22/100

Cool

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

Softness 49/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 41/100

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 53/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 49/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 29/100

Low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 89/100

Very high

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

Surface fit 29/100

Low

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

Print safety 79/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #537FBC

For UI

For branding

For interior

For fashion

People also use #537FBC with

Medium Turquoise Slate Blue Camel Gainsboro Charcoal

UI roles & guardrails

Primary action Safe as a filled button with near-black label. AA

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 4.5:1. Use

Subtle surface Use #DFE6EF for cards and hover fills. Tint 80

Avoid beside #525BBC — 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 #537FBC 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: #537FBC;
  --color-base-rgb: 83 127 188;
  --color-base-oklch: oklch(59.2% 0.106 256.8);
  --color-50: #F4F7FB;
  --color-100: #E1E9F4;
  --color-200: #C4D3E8;
  --color-300: #9BB3D4;
  --color-400: #7593BD;
  --color-500: #5474A1;
  --color-600: #465C7C;
  --color-700: #364459;
  --color-800: #262F3B;
  --color-900: #191E25;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  glaucous: {
    50: '#F4F7FB',
    100: '#E1E9F4',
    200: '#C4D3E8',
    300: '#9BB3D4',
    400: '#7593BD',
    500: '#5474A1',
    600: '#465C7C',
    700: '#364459',
    800: '#262F3B',
    900: '#191E25',
  },
}

$base: #537FBC;
$base-ink: #141310;
$base-50: #F4F7FB;
$base-100: #E1E9F4;
$base-200: #C4D3E8;
$base-300: #9BB3D4;
$base-400: #7593BD;
$base-500: #5474A1;
$base-600: #465C7C;
$base-700: #364459;
$base-800: #262F3B;
$base-900: #191E25;
$base-hover: #3D649C;
$base-subtle: #CFD9E7;

{
    "color": {
        "base": {
            "value": "#537FBC",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F7FB",
                "type": "color"
            },
            "100": {
                "value": "#E1E9F4",
                "type": "color"
            },
            "200": {
                "value": "#C4D3E8",
                "type": "color"
            },
            "300": {
                "value": "#9BB3D4",
                "type": "color"
            },
            "400": {
                "value": "#7593BD",
                "type": "color"
            },
            "500": {
                "value": "#5474A1",
                "type": "color"
            },
            "600": {
                "value": "#465C7C",
                "type": "color"
            },
            "700": {
                "value": "#364459",
                "type": "color"
            },
            "800": {
                "value": "#262F3B",
                "type": "color"
            },
            "900": {
                "value": "#191E25",
                "type": "color"
            }
        }
    }
}

Palettes built on #537FBC

Color Lab

Pairs with #537FBC

UI roles & guardrails

In real applications

Scales

Every model

Export