What color is #667DE2?

#667DE2 is a light, soft blue. In RGB it is rgb(102, 125, 226), and in HSL hsl(229, 68%, 64%).

Is #667DE2 accessible as text?

On white, #667DE2 has a contrast ratio of 3.75:1 (fails WCAG AA for body text); on black it is 5.60:1 (passes). For text placed on #667DE2, use black for the best readability.

What is the closest Tailwind color to #667DE2?

The nearest Tailwind CSS token is indigo-400 (#7C86FF).

What colors go well with #667DE2?

#667DE2 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #E2CB65. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #667DE2 below.

Is #667DE2 good for buttons?

#667DE2 works well for buttons and highlights, but use black text on #667DE2 — white text only reaches 3.75:1, below the 4.5:1 needed for normal-size labels.

Is #667DE2 the same as CSS mediumslateblue?

No — #667DE2 is not the CSS named color mediumslateblue, but mediumslateblue (#7B68EE) is the closest CSS named color.

#667DE2 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #667DE2

Not just a swatch — here's how #667DE2 works with other colors. Named schemes with #667DE2 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #667DE2 Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Medium Slate 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 #667DE2 Secondary #AEB4B8 Surface #F1F2F0 Support #7E92A7 Anchor #2E3236

Medium Slate 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 #667DE2 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #8CA4FF

Medium Slate 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 Medium Slate Blue.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #667DE2 Secondary #A5B0D4 Support #9D8F88 Ink #18140F

Medium Slate 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 Medium Slate Blue carrying the quiet middle.

Modern Café Dominant · 5 colors

Dominant #667DE2 Anchor #3B2924 Surface #F3E1D2 Accent #779E7A Secondary #3C3734

Medium Slate 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 #667DE2 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 16/100

Cool

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

Softness 45/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 39/100

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 38/100

Low

A faint retro warmth without tipping into sepia.

Luxury 44/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 59/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 86/100

Very 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 74/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #667DE2

For UI

For branding

For interior

For fashion

People also use #667DE2 with

Sky Blue Medium Purple Saffron Gainsboro Gunmetal Gray

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 5.0:1. Use

Subtle surface Use #E4E7F6 for cards and hover fills. Tint 80

Avoid beside #7865E2 — 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 #667DE2 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: #667DE2;
  --color-base-rgb: 102 125 226;
  --color-base-oklch: oklch(62.0% 0.154 271.6);
  --color-50: #F2F4FD;
  --color-100: #DCE1F9;
  --color-200: #BBC5F2;
  --color-300: #8C9CE3;
  --color-400: #6175D1;
  --color-500: #3F54B6;
  --color-600: #37468B;
  --color-700: #2C3663;
  --color-800: #202641;
  --color-900: #151928;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  medium-slate-blue: {
    50: '#F2F4FD',
    100: '#DCE1F9',
    200: '#BBC5F2',
    300: '#8C9CE3',
    400: '#6175D1',
    500: '#3F54B6',
    600: '#37468B',
    700: '#2C3663',
    800: '#202641',
    900: '#151928',
  },
}

$base: #667DE2;
$base-ink: #141310;
$base-50: #F2F4FD;
$base-100: #DCE1F9;
$base-200: #BBC5F2;
$base-300: #8C9CE3;
$base-400: #6175D1;
$base-500: #3F54B6;
$base-600: #37468B;
$base-700: #2C3663;
$base-800: #202641;
$base-900: #151928;
$base-hover: #2E4DD7;
$base-subtle: #D5DAF2;

{
    "color": {
        "base": {
            "value": "#667DE2",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F4FD",
                "type": "color"
            },
            "100": {
                "value": "#DCE1F9",
                "type": "color"
            },
            "200": {
                "value": "#BBC5F2",
                "type": "color"
            },
            "300": {
                "value": "#8C9CE3",
                "type": "color"
            },
            "400": {
                "value": "#6175D1",
                "type": "color"
            },
            "500": {
                "value": "#3F54B6",
                "type": "color"
            },
            "600": {
                "value": "#37468B",
                "type": "color"
            },
            "700": {
                "value": "#2C3663",
                "type": "color"
            },
            "800": {
                "value": "#202641",
                "type": "color"
            },
            "900": {
                "value": "#151928",
                "type": "color"
            }
        }
    }
}

Palettes built on #667DE2

Color Lab

Pairs with #667DE2

UI roles & guardrails

In real applications

Scales

Every model

Export