What color is #375F71?

#375F71 is a dark cyan-blue. In RGB it is rgb(55, 95, 113), and in HSL hsl(199, 35%, 33%).

Is #375F71 accessible as text?

On white, #375F71 has a contrast ratio of 6.91:1 (passes WCAG AA for body text); on black it is 3.04:1 (fails). For text placed on #375F71, use white for the best readability.

What is the closest Tailwind color to #375F71?

The nearest Tailwind CSS token is cyan-800 (#005F78).

What colors go well with #375F71?

#375F71 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #724937. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #375F71 below.

Is #375F71 good for buttons?

#375F71 works well for buttons and highlights, but use white text on #375F71 — black text only reaches 3.04:1, below the 4.5:1 needed for normal-size labels.

Is #375F71 the same as CSS darkslategray?

No — #375F71 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#375F71 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #375F71

Not just a swatch — here's how #375F71 works with other colors. Named schemes with #375F71 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #375F71 Accent #A6C4BF Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

Feldgrau 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 #375F71 Secondary #AEB4B8 Surface #F1F2F0 Support #7B93A6 Anchor #2E3236

Feldgrau 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 #375F71 Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #5D8192

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

Vintage Leather Lead · 5 colors

Lead #375F71 Secondary #6F5216 Surface #E2DCC0 Accent #385244 Anchor #56233D

Feldgrau 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 #375F71 Secondary #76848A Support #969386 Ink #16140F

Feldgrau 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 Feldgrau carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #375F71 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 34/100

Cool

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

Softness 45/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 52/100

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 42/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 56/100

Moderate

Restrained and premium — deep, quiet, high-end packaging and fashion.

Brand distinctiveness 21/100

Low

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

UI accent fit 68/100

High

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

Surface fit 39/100

Low

Usable as a tinted surface in measured doses.

Print safety 86/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #375F71

For UI

For branding

For interior

For fashion

People also use #375F71 with

Viridian Dark Slate Blue Coffee 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 6.9:1. Use

Subtle surface Use #D4E0E5 for cards and hover fills. Tint 80

Avoid beside #374B72 — 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 #375F71 at work across the surfaces designers actually ship.

Website / UI

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Build faster.

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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: #375F71;
  --color-base-rgb: 55 95 113;
  --color-base-oklch: oklch(46.4% 0.054 228.6);
  --color-50: #F4F8FA;
  --color-100: #E3EDF2;
  --color-200: #C8DBE4;
  --color-300: #A1C0CE;
  --color-400: #7CA4B6;
  --color-500: #5C8699;
  --color-600: #4B6977;
  --color-700: #394D56;
  --color-800: #283439;
  --color-900: #1A2023;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  feldgrau: {
    50: '#F4F8FA',
    100: '#E3EDF2',
    200: '#C8DBE4',
    300: '#A1C0CE',
    400: '#7CA4B6',
    500: '#5C8699',
    600: '#4B6977',
    700: '#394D56',
    800: '#283439',
    900: '#1A2023',
  },
}

$base: #375F71;
$base-ink: #FFFFFF;
$base-50: #F4F8FA;
$base-100: #E3EDF2;
$base-200: #C8DBE4;
$base-300: #A1C0CE;
$base-400: #7CA4B6;
$base-500: #5C8699;
$base-600: #4B6977;
$base-700: #394D56;
$base-800: #283439;
$base-900: #1A2023;
$base-hover: #2C4C5B;
$base-subtle: #BED1D9;

{
    "color": {
        "base": {
            "value": "#375F71",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F8FA",
                "type": "color"
            },
            "100": {
                "value": "#E3EDF2",
                "type": "color"
            },
            "200": {
                "value": "#C8DBE4",
                "type": "color"
            },
            "300": {
                "value": "#A1C0CE",
                "type": "color"
            },
            "400": {
                "value": "#7CA4B6",
                "type": "color"
            },
            "500": {
                "value": "#5C8699",
                "type": "color"
            },
            "600": {
                "value": "#4B6977",
                "type": "color"
            },
            "700": {
                "value": "#394D56",
                "type": "color"
            },
            "800": {
                "value": "#283439",
                "type": "color"
            },
            "900": {
                "value": "#1A2023",
                "type": "color"
            }
        }
    }
}

Palettes built on #375F71

Color Lab

Pairs with #375F71

UI roles & guardrails

In real applications

Scales

Every model

Export