Nearest named color: Royal Blue
#2572E4
#2572E4
Nearest named
Royal Blue
Family
Blue
Lightness
57.1%
Chroma
0.189
Hue angle
258.9°
Temperature
Cool
Contrast on white
4.56:1 · AA
Contrast on black
4.07:1 · AA Large
Web-safe
#3366CC
CSS oklch()
57% 0.19 259

#2572E4 is a mid-toned, cool indigo. On the Color Lab it reads clean and engineered, bold and ownable. It carries a legible label as a UI accent and sits well as a supporting tone.

Palettes built on #2572E4

Not just a swatch — here's how #2572E4 works with other colors. Named schemes with #2572E4 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Royal 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 Royal Blue.

Coastal Morning Lead · 5 colors

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

Berry & Cream Lead · 5 colors

Royal Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Minimal Editorial Surface · 5 colors

Royal 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 Royal Blue carrying the quiet middle.

Sunset Warmth Glow · 5 colors

Royal 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 #2572E4 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 6/100
Cool
Reads cool and recessive — calming, technical, good for trust-led UI.
Softness 37/100
Low
Middle-weight — neither delicate nor heavy.
Depth 46/100
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 28/100
Low
A faint retro warmth without tipping into sepia.
Luxury 46/100
Moderate
Understated — leans refined without going austere.
Brand distinctiveness 73/100
High
Bold and ownable — memorable as a primary brand color.
UI accent fit 88/100
Very high
Strong interactive accent — visible and can carry a legible label.
Surface fit 14/100
Very low
Too saturated or mid-toned for big areas — keep it to accents.
Print safety 63/100
High
Prints close, with a slight loss of vibrancy.

Pairs with #2572E4

For UI
For branding
For interior
For fashion
People also use #2572E4 with

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 4.6:1. Use
Subtle surface Use #D9E4F4 for cards and hover fills. Tint 80
Avoid beside #2532E4 — 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 #2572E4 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

Scales

ShadesBase darkened in 10% steps
TintsBase lifted toward white
TonesSaturation removed, lightness held
Monochromatic scaleDesign-system ready, 50–900

Every model

Export

:root {
  --color-base: #2572E4;
  --color-base-rgb: 37 114 228;
  --color-base-oklch: oklch(57.1% 0.189 258.9);
  --color-50: #F1F6FE;
  --color-100: #DAE7FB;
  --color-200: #B6D0F6;
  --color-300: #85AEEA;
  --color-400: #588CDA;
  --color-500: #366DBF;
  --color-600: #305791;
  --color-700: #284167;
  --color-800: #1E2D43;
  --color-900: #141C29;
  --color-on-base: #141310;
}