What color is #277CCC?

#277CCC is a medium blue. In RGB it is rgb(39, 124, 204), and in HSL hsl(209, 68%, 48%).

Is #277CCC accessible as text?

On white, #277CCC has a contrast ratio of 4.34:1 (fails WCAG AA for body text); on black it is 4.84:1 (passes). For text placed on #277CCC, use black for the best readability.

What is the closest Tailwind color to #277CCC?

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

What colors go well with #277CCC?

#277CCC pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #CE7827. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #277CCC below.

Is #277CCC good for buttons?

#277CCC works well for buttons and highlights, but use black text on #277CCC — white text only reaches 4.34:1, below the 4.5:1 needed for normal-size labels.

Is #277CCC the same as CSS steelblue?

No — #277CCC is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#277CCC Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #277CCC

Not just a swatch — here's how #277CCC works with other colors. Named schemes with #277CCC in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #277CCC Accent #A5C4C1 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 #277CCC Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #5AA2EC

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 #277CCC Secondary #7F4537 Surface #E1DDC0 Accent #375245 Anchor #57233B

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 #277CCC Surface #EDE9D6 Anchor #5A2145 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 #277CCC Secondary #8CA7C3 Support #959386 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 #277CCC 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 9/100

Cool

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

Softness 43/100

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 41/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 48/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 40/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 96/100

Very high

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

Surface fit 15/100

Very low

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

Print safety 68/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #277CCC

For UI

For branding

For interior

For fashion

People also use #277CCC with

Turquoise Medium Blue Ochre Gainsboro 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 4.3:1. Use

Subtle surface Use #D7E5F1 for cards and hover fills. Tint 80

Avoid beside #2746CE — 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 #277CCC 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
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Packaging

BLOOM

Botanical Wash

250 ml

Interior

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Export

:root {
  --color-base: #277CCC;
  --color-base-rgb: 39 124 204;
  --color-base-oklch: oklch(57.7% 0.146 251.0);
  --color-50: #F2F8FD;
  --color-100: #DCEBF9;
  --color-200: #BBD7F2;
  --color-300: #8CB9E3;
  --color-400: #619BD1;
  --color-500: #3F7CB6;
  --color-600: #37628B;
  --color-700: #2C4863;
  --color-800: #203141;
  --color-900: #151F28;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  true-blue: {
    50: '#F2F8FD',
    100: '#DCEBF9',
    200: '#BBD7F2',
    300: '#8CB9E3',
    400: '#619BD1',
    500: '#3F7CB6',
    600: '#37628B',
    700: '#2C4863',
    800: '#203141',
    900: '#151F28',
  },
}

$base: #277CCC;
$base-ink: #141310;
$base-50: #F2F8FD;
$base-100: #DCEBF9;
$base-200: #BBD7F2;
$base-300: #8CB9E3;
$base-400: #619BD1;
$base-500: #3F7CB6;
$base-600: #37628B;
$base-700: #2C4863;
$base-800: #203141;
$base-900: #151F28;
$base-hover: #1F64A5;
$base-subtle: #C3D8EC;

{
    "color": {
        "base": {
            "value": "#277CCC",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F8FD",
                "type": "color"
            },
            "100": {
                "value": "#DCEBF9",
                "type": "color"
            },
            "200": {
                "value": "#BBD7F2",
                "type": "color"
            },
            "300": {
                "value": "#8CB9E3",
                "type": "color"
            },
            "400": {
                "value": "#619BD1",
                "type": "color"
            },
            "500": {
                "value": "#3F7CB6",
                "type": "color"
            },
            "600": {
                "value": "#37628B",
                "type": "color"
            },
            "700": {
                "value": "#2C4863",
                "type": "color"
            },
            "800": {
                "value": "#203141",
                "type": "color"
            },
            "900": {
                "value": "#151F28",
                "type": "color"
            }
        }
    }
}

Palettes built on #277CCC

Color Lab

Pairs with #277CCC

UI roles & guardrails

In real applications

Scales

Every model

Export