What color is #517D90?

#517D90 is a medium, muted cyan-blue. In RGB it is rgb(81, 125, 144), and in HSL hsl(198, 28%, 44%).

Is #517D90 accessible as text?

On white, #517D90 has a contrast ratio of 4.48:1 (fails WCAG AA for body text); on black it is 4.69:1 (passes). For text placed on #517D90, use black for the best readability.

What is the closest Tailwind color to #517D90?

The nearest Tailwind CSS token is mist-500 (#67787C).

What colors go well with #517D90?

#517D90 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #906451. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #517D90 below.

Is #517D90 good for buttons?

#517D90 works well for buttons and highlights, but use black text on #517D90 — white text only reaches 4.48:1, below the 4.5:1 needed for normal-size labels.

Is #517D90 the same as CSS slategray?

No — #517D90 is not the CSS named color slategray, but slategray (#708090) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#517D90 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #517D90

Not just a swatch — here's how #517D90 works with other colors. Named schemes with #517D90 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #517D90 Accent #A6C4BF Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

Teal Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Nordic Calm Accent · 5 colors

Accent #517D90 Secondary #AEB4B8 Surface #F1F2F0 Support #7B93A6 Anchor #2E3236

Teal Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Tech Product Signal · 5 colors

Signal #517D90 Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #79A1B3

Teal 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 Teal Blue.

Vintage Leather Lead · 5 colors

Lead #517D90 Secondary #6F5216 Surface #E2DCC0 Accent #385244 Anchor #56233D

Teal 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.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #517D90 Secondary #94A3AA Support #969386 Ink #16140F

Teal 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 Teal Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #517D90 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 33/100

Cool

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

Softness 53/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 42/100

Moderate

Mid depth — usable as an accent or a muted ground.

Naturalness 1/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 48/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 48/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 22/100

Low

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

UI accent fit 74/100

High

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

Surface fit 41/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 85/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #517D90

For UI

For branding

For interior

For fashion

People also use #517D90 with

Cadet Blue Ultra Violet Raw Umber Platinum Charcoal

UI roles & guardrails

Primary action Too mid-tone for a filled button — darken for the fill. AA Large

Body text Do not use for body copy on light surfaces. Avoid

Large display Fine for headings 24px+ on white. Pass

Background Pair with white text at 4.5:1. Use

Subtle surface Use #DDE5E8 for cards and hover fills. Tint 80

Avoid beside #516890 — 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 #517D90 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: #517D90;
  --color-base-rgb: 81 125 144;
  --color-base-oklch: oklch(56.5% 0.057 227.1);
  --color-50: #F5F8FA;
  --color-100: #E5EDF1;
  --color-200: #CBDBE2;
  --color-300: #A6BFCA;
  --color-400: #82A2B0;
  --color-500: #628493;
  --color-600: #4F6872;
  --color-700: #3C4C53;
  --color-800: #2A3337;
  --color-900: #1B2022;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  teal-blue: {
    50: '#F5F8FA',
    100: '#E5EDF1',
    200: '#CBDBE2',
    300: '#A6BFCA',
    400: '#82A2B0',
    500: '#628493',
    600: '#4F6872',
    700: '#3C4C53',
    800: '#2A3337',
    900: '#1B2022',
  },
}

$base: #517D90;
$base-ink: #141310;
$base-50: #F5F8FA;
$base-100: #E5EDF1;
$base-200: #CBDBE2;
$base-300: #A6BFCA;
$base-400: #82A2B0;
$base-500: #628493;
$base-600: #4F6872;
$base-700: #3C4C53;
$base-800: #2A3337;
$base-900: #1B2022;
$base-hover: #416473;
$base-subtle: #CBD8DD;

{
    "color": {
        "base": {
            "value": "#517D90",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F8FA",
                "type": "color"
            },
            "100": {
                "value": "#E5EDF1",
                "type": "color"
            },
            "200": {
                "value": "#CBDBE2",
                "type": "color"
            },
            "300": {
                "value": "#A6BFCA",
                "type": "color"
            },
            "400": {
                "value": "#82A2B0",
                "type": "color"
            },
            "500": {
                "value": "#628493",
                "type": "color"
            },
            "600": {
                "value": "#4F6872",
                "type": "color"
            },
            "700": {
                "value": "#3C4C53",
                "type": "color"
            },
            "800": {
                "value": "#2A3337",
                "type": "color"
            },
            "900": {
                "value": "#1B2022",
                "type": "color"
            }
        }
    }
}

Palettes built on #517D90

Color Lab

Pairs with #517D90

UI roles & guardrails

In real applications

Scales

Every model

Export