What color is #255DA7?

#255DA7 is a medium blue. In RGB it is rgb(37, 93, 167), and in HSL hsl(214, 64%, 40%).

Is #255DA7 accessible as text?

On white, #255DA7 has a contrast ratio of 6.56:1 (passes WCAG AA for body text); on black it is 3.20:1 (fails). For text placed on #255DA7, use white for the best readability.

What is the closest Tailwind color to #255DA7?

The nearest Tailwind CSS token is sky-700 (#0069A8).

What colors go well with #255DA7?

#255DA7 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #A76F25. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #255DA7 below.

Is #255DA7 good for buttons?

#255DA7 works well for buttons and highlights, but use white text on #255DA7 — black text only reaches 3.20:1, below the 4.5:1 needed for normal-size labels.

Is #255DA7 the same as CSS darkslateblue?

No — #255DA7 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#255DA7 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #255DA7

Not just a swatch — here's how #255DA7 works with other colors. Named schemes with #255DA7 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #255DA7 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Lapis Lazuli 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 #255DA7 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #4F82C7

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

Vintage Leather Lead · 5 colors

Lead #255DA7 Secondary #7F4537 Surface #E1DDC1 Accent #375246 Anchor #57233B

Lapis Lazuli 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 #255DA7 Surface #EDE9D6 Anchor #5A2145 Accent #E4C2CA Secondary #322B2F

Lapis Lazuli 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 #255DA7 Secondary #7588A3 Support #9D8F89 Ink #16140F

Lapis Lazuli 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 Lapis Lazuli carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #255DA7 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 15/100

Cool

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

Softness 38/100

Low

Middle-weight — neither delicate nor heavy.

Depth 53/100

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 43/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 58/100

Moderate

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

Brand distinctiveness 36/100

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 13/100

Very low

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

Print safety 73/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #255DA7

For UI

For branding

For interior

For fashion

People also use #255DA7 with

Robin Egg Blue Egyptian Blue Ginger Gainsboro 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 6.6:1. Use

Subtle surface Use #D2DFEF for cards and hover fills. Tint 80

Avoid beside #2532A7 — 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 #255DA7 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
MARKET

Packaging

BLOOM

Botanical Wash

250 ml

Interior

Every model

Export

:root {
  --color-base: #255DA7;
  --color-base-rgb: 37 93 167;
  --color-base-oklch: oklch(48.2% 0.133 256.7);
  --color-50: #F2F7FD;
  --color-100: #DDE9F8;
  --color-200: #BCD3F0;
  --color-300: #8EB2E1;
  --color-400: #6492CE;
  --color-500: #4273B3;
  --color-600: #395C89;
  --color-700: #2E4461;
  --color-800: #212E40;
  --color-900: #161D27;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  lapis-lazuli: {
    50: '#F2F7FD',
    100: '#DDE9F8',
    200: '#BCD3F0',
    300: '#8EB2E1',
    400: '#6492CE',
    500: '#4273B3',
    600: '#395C89',
    700: '#2E4461',
    800: '#212E40',
    900: '#161D27',
  },
}

$base: #255DA7;
$base-ink: #FFFFFF;
$base-50: #F2F7FD;
$base-100: #DDE9F8;
$base-200: #BCD3F0;
$base-300: #8EB2E1;
$base-400: #6492CE;
$base-500: #4273B3;
$base-600: #395C89;
$base-700: #2E4461;
$base-800: #212E40;
$base-900: #161D27;
$base-hover: #1D4B86;
$base-subtle: #BBCEE7;

{
    "color": {
        "base": {
            "value": "#255DA7",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F7FD",
                "type": "color"
            },
            "100": {
                "value": "#DDE9F8",
                "type": "color"
            },
            "200": {
                "value": "#BCD3F0",
                "type": "color"
            },
            "300": {
                "value": "#8EB2E1",
                "type": "color"
            },
            "400": {
                "value": "#6492CE",
                "type": "color"
            },
            "500": {
                "value": "#4273B3",
                "type": "color"
            },
            "600": {
                "value": "#395C89",
                "type": "color"
            },
            "700": {
                "value": "#2E4461",
                "type": "color"
            },
            "800": {
                "value": "#212E40",
                "type": "color"
            },
            "900": {
                "value": "#161D27",
                "type": "color"
            }
        }
    }
}

Palettes built on #255DA7

Color Lab

Pairs with #255DA7

UI roles & guardrails

In real applications

Scales

Every model

Export