What color is #237DAE?

#237DAE is a medium cyan-blue. In RGB it is rgb(35, 125, 174), and in HSL hsl(201, 67%, 41%).

Is #237DAE accessible as text?

On white, #237DAE has a contrast ratio of 4.55:1 (passes WCAG AA for body text); on black it is 4.62:1 (passes). For text placed on #237DAE, use black for the best readability.

What is the closest Tailwind color to #237DAE?

The nearest Tailwind CSS token is cyan-700 (#007595).

What colors go well with #237DAE?

#237DAE pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #AF5423. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #237DAE below.

Is #237DAE good for buttons?

#237DAE works for buttons; black text has the higher contrast, so prefer it for labels.

Is #237DAE the same as CSS steelblue?

No — #237DAE is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#237DAE Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #237DAE

Not just a swatch — here's how #237DAE works with other colors. Named schemes with #237DAE in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #237DAE Accent #A6C4C0 Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

Steel 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 #237DAE Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #58A1CF

Steel 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 Steel Blue.

Vintage Leather Lead · 5 colors

Lead #237DAE Secondary #7F4439 Surface #E2DDC0 Accent #385245 Anchor #57233C

Steel 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 #237DAE Surface #EEE9D6 Anchor #592246 Accent #E4C2CC Secondary #322B30

Steel 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 #237DAE Secondary #89A3B5 Support #969386 Ink #16140F

Steel 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 Steel Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #237DAE 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 17/100

Cool

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

Softness 46/100

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 52/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 52/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 30/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 95/100

Very high

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

Surface fit 25/100

Low

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

Print safety 73/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #237DAE

For UI

For branding

For interior

For fashion

People also use #237DAE with

Medium Aquamarine Egyptian Blue Sienna Platinum 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 #D2E5EF for cards and hover fills. Tint 80

Avoid beside #234FAF — 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 #237DAE 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: #237DAE;
  --color-base-rgb: 35 125 174;
  --color-base-oklch: oklch(56.1% 0.111 238.0);
  --color-50: #F2F9FD;
  --color-100: #DCEFF9;
  --color-200: #BBDEF1;
  --color-300: #8CC5E3;
  --color-400: #62AAD0;
  --color-500: #3F8CB5;
  --color-600: #376D8B;
  --color-700: #2C5062;
  --color-800: #203541;
  --color-900: #162128;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  steel-blue: {
    50: '#F2F9FD',
    100: '#DCEFF9',
    200: '#BBDEF1',
    300: '#8CC5E3',
    400: '#62AAD0',
    500: '#3F8CB5',
    600: '#376D8B',
    700: '#2C5062',
    800: '#203541',
    900: '#162128',
  },
}

$base: #237DAE;
$base-ink: #141310;
$base-50: #F2F9FD;
$base-100: #DCEFF9;
$base-200: #BBDEF1;
$base-300: #8CC5E3;
$base-400: #62AAD0;
$base-500: #3F8CB5;
$base-600: #376D8B;
$base-700: #2C5062;
$base-800: #203541;
$base-900: #162128;
$base-hover: #1C648C;
$base-subtle: #BBD9E9;

{
    "color": {
        "base": {
            "value": "#237DAE",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F9FD",
                "type": "color"
            },
            "100": {
                "value": "#DCEFF9",
                "type": "color"
            },
            "200": {
                "value": "#BBDEF1",
                "type": "color"
            },
            "300": {
                "value": "#8CC5E3",
                "type": "color"
            },
            "400": {
                "value": "#62AAD0",
                "type": "color"
            },
            "500": {
                "value": "#3F8CB5",
                "type": "color"
            },
            "600": {
                "value": "#376D8B",
                "type": "color"
            },
            "700": {
                "value": "#2C5062",
                "type": "color"
            },
            "800": {
                "value": "#203541",
                "type": "color"
            },
            "900": {
                "value": "#162128",
                "type": "color"
            }
        }
    }
}

Palettes built on #237DAE

Color Lab

Pairs with #237DAE

UI roles & guardrails

In real applications

Scales

Every model

Export