What color is #40AEF2?

#40AEF2 is a medium, vivid cyan-blue. In RGB it is rgb(64, 174, 242), and in HSL hsl(203, 87%, 60%).

Is #40AEF2 accessible as text?

On white, #40AEF2 has a contrast ratio of 2.45:1 (fails WCAG AA for body text); on black it is 8.55:1 (passes). For text placed on #40AEF2, use black for the best readability.

What is the closest Tailwind color to #40AEF2?

The nearest Tailwind CSS token is sky-500 (#00A6F4).

What colors go well with #40AEF2?

#40AEF2 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #F28440. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #40AEF2 below.

Is #40AEF2 good for buttons?

#40AEF2 works well for buttons and highlights, but use black text on #40AEF2 — white text only reaches 2.45:1, below the 4.5:1 needed for normal-size labels.

Is #40AEF2 the same as CSS deepskyblue?

No — #40AEF2 is not the CSS named color deepskyblue, but deepskyblue (#00BFFF) is the closest CSS named color.

#40AEF2 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #40AEF2

Not just a swatch — here's how #40AEF2 works with other colors. Named schemes with #40AEF2 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #40AEF2 Accent #A5C4C0 Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

Picton 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 #40AEF2 Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Picton 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 #40AEF2 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #78D4FF

Picton 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 Picton Blue.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #40AEF2 Secondary #B5D5EE Support #969386 Ink #16140F

Picton 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 Picton Blue carrying the quiet middle.

Modern Café Dominant · 5 colors

Dominant #40AEF2 Anchor #3C2925 Surface #EAE5D0 Accent #7B9E77 Secondary #393933

Picton Blue anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Build a working theme in the generator →

Color Lab

How #40AEF2 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 53/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 29/100

Low

Airy and open — recedes, leaves the composition light.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 33/100

Low

A faint retro warmth without tipping into sepia.

Luxury 35/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 54/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 54/100

Moderate

Workable accent with care around contrast.

Surface fit 31/100

Low

Usable as a tinted surface in measured doses.

Print safety 66/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #40AEF2

For UI

For branding

For interior

For fashion

People also use #40AEF2 with

Aquamarine Neon Blue Cadmium Orange Platinum Charcoal

UI roles & guardrails

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

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

Large display Only on dark surfaces. Avoid

Background Pair with #141310 text at 7.6:1. Use

Subtle surface Use #DEEEF7 for cards and hover fills. Tint 80

Avoid beside #4073F2 — 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 #40AEF2 at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

A working theme, generated in seconds.

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: #40AEF2;
  --color-base-rgb: 64 174 242;
  --color-base-oklch: oklch(71.8% 0.139 240.3);
  --color-50: #F0F9FE;
  --color-100: #D8EFFD;
  --color-200: #B3DEFA;
  --color-300: #7FC5F0;
  --color-400: #51AAE1;
  --color-500: #2E8CC7;
  --color-600: #2B6E97;
  --color-700: #24506B;
  --color-800: #1C3545;
  --color-900: #13212A;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  picton-blue: {
    50: '#F0F9FE',
    100: '#D8EFFD',
    200: '#B3DEFA',
    300: '#7FC5F0',
    400: '#51AAE1',
    500: '#2E8CC7',
    600: '#2B6E97',
    700: '#24506B',
    800: '#1C3545',
    900: '#13212A',
  },
}

$base: #40AEF2;
$base-ink: #141310;
$base-50: #F0F9FE;
$base-100: #D8EFFD;
$base-200: #B3DEFA;
$base-300: #7FC5F0;
$base-400: #51AAE1;
$base-500: #2E8CC7;
$base-600: #2B6E97;
$base-700: #24506B;
$base-800: #1C3545;
$base-900: #13212A;
$base-hover: #1093E5;
$base-subtle: #CCE5F5;

{
    "color": {
        "base": {
            "value": "#40AEF2",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F9FE",
                "type": "color"
            },
            "100": {
                "value": "#D8EFFD",
                "type": "color"
            },
            "200": {
                "value": "#B3DEFA",
                "type": "color"
            },
            "300": {
                "value": "#7FC5F0",
                "type": "color"
            },
            "400": {
                "value": "#51AAE1",
                "type": "color"
            },
            "500": {
                "value": "#2E8CC7",
                "type": "color"
            },
            "600": {
                "value": "#2B6E97",
                "type": "color"
            },
            "700": {
                "value": "#24506B",
                "type": "color"
            },
            "800": {
                "value": "#1C3545",
                "type": "color"
            },
            "900": {
                "value": "#13212A",
                "type": "color"
            }
        }
    }
}

Palettes built on #40AEF2

Color Lab

Pairs with #40AEF2

UI roles & guardrails

In real applications

Scales

Every model

Export