What color is #1287F5?

#1287F5 is a medium, vivid blue. In RGB it is rgb(18, 135, 245), and in HSL hsl(209, 92%, 52%).

Is #1287F5 accessible as text?

On white, #1287F5 has a contrast ratio of 3.61:1 (fails WCAG AA for body text); on black it is 5.81:1 (passes). For text placed on #1287F5, use black for the best readability.

What is the closest Tailwind color to #1287F5?

The nearest Tailwind CSS token is blue-500 (#2B7FFF).

What colors go well with #1287F5?

#1287F5 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #F58114. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #1287F5 below.

Is #1287F5 good for buttons?

#1287F5 works well for buttons and highlights, but use black text on #1287F5 — white text only reaches 3.61:1, below the 4.5:1 needed for normal-size labels.

Is #1287F5 the same as CSS dodgerblue?

No — #1287F5 is not the CSS named color dodgerblue, but dodgerblue (#1E90FF) is the closest CSS named color.

#1287F5 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #1287F5

Not just a swatch — here's how #1287F5 works with other colors. Named schemes with #1287F5 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #1287F5 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #55AFFF

Signal 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 Signal Blue.

Nordic Calm Accent · 5 colors

Accent #1287F5 Secondary #AEB4B8 Surface #F1F2F0 Support #7D93A6 Anchor #2E3236

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

Coastal Morning Lead · 5 colors

Lead #1287F5 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

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

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #1287F5 Secondary #95B5DC Support #9D8F89 Ink #16140F

Signal 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 Signal Blue carrying the quiet middle.

Sunset Warmth Glow · 5 colors

Glow #1287F5 Secondary #E76A78 Accent #C5B029 Anchor #563B59 Surface #EEEBD6

Signal Blue glows at the center of this sunset palette, joined by coral and gold, deepened by a plum anchor and cooled with cream.

Build a working theme in the generator →

Color Lab

How #1287F5 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 4/100

Cool

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

Softness 40/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 40/100

Low

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

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 25/100

Low

A faint retro warmth without tipping into sepia.

Luxury 41/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 73/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 78/100

High

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

Surface fit 19/100

Very low

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

Print safety 60/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #1287F5

For UI

For branding

For interior

For fashion

People also use #1287F5 with

Cyan Blue Peru Gainsboro Charcoal

UI roles & guardrails

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

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

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

Background Pair with #141310 text at 5.1:1. Use

Subtle surface Use #D6E7F7 for cards and hover fills. Tint 80

Avoid beside #143DF5 — 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 #1287F5 at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

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: #1287F5;
  --color-base-rgb: 18 135 245;
  --color-base-oklch: oklch(62.4% 0.189 253.5);
  --color-50: #F0F8FE;
  --color-100: #D8EBFD;
  --color-200: #B1D7FC;
  --color-300: #7CBAF3;
  --color-400: #4D9CE5;
  --color-500: #297DCB;
  --color-600: #28639A;
  --color-700: #22496D;
  --color-800: #1A3147;
  --color-900: #121F2B;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  signal-blue: {
    50: '#F0F8FE',
    100: '#D8EBFD',
    200: '#B1D7FC',
    300: '#7CBAF3',
    400: '#4D9CE5',
    500: '#297DCB',
    600: '#28639A',
    700: '#22496D',
    800: '#1A3147',
    900: '#121F2B',
  },
}

$base: #1287F5;
$base-ink: #141310;
$base-50: #F0F8FE;
$base-100: #D8EBFD;
$base-200: #B1D7FC;
$base-300: #7CBAF3;
$base-400: #4D9CE5;
$base-500: #297DCB;
$base-600: #28639A;
$base-700: #22496D;
$base-800: #1A3147;
$base-900: #121F2B;
$base-hover: #086DCC;
$base-subtle: #C1DBF4;

{
    "color": {
        "base": {
            "value": "#1287F5",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F8FE",
                "type": "color"
            },
            "100": {
                "value": "#D8EBFD",
                "type": "color"
            },
            "200": {
                "value": "#B1D7FC",
                "type": "color"
            },
            "300": {
                "value": "#7CBAF3",
                "type": "color"
            },
            "400": {
                "value": "#4D9CE5",
                "type": "color"
            },
            "500": {
                "value": "#297DCB",
                "type": "color"
            },
            "600": {
                "value": "#28639A",
                "type": "color"
            },
            "700": {
                "value": "#22496D",
                "type": "color"
            },
            "800": {
                "value": "#1A3147",
                "type": "color"
            },
            "900": {
                "value": "#121F2B",
                "type": "color"
            }
        }
    }
}

Palettes built on #1287F5

Color Lab

Pairs with #1287F5

UI roles & guardrails

In real applications

Scales

Every model

Export