Nearest named color: Carolina Blue
#259FD0
#259FD0
Nearest named
Carolina Blue
Family
Blue
Lightness
66.1%
Chroma
0.124
Hue angle
231.0°
Temperature
Cool
Contrast on white
3.02:1 · AA Large
Contrast on black
6.15:1 · AA
Web-safe
#3399CC
CSS oklch()
66% 0.12 231

#259FD0 is a mid-toned, cool blue. On the Color Lab it reads clean and engineered. It carries a legible label as a UI accent and sits well as a supporting tone.

Palettes built on #259FD0

Not just a swatch — here's how #259FD0 works with other colors. Named schemes with #259FD0 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Carolina 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

Carolina 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

Carolina 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 Carolina Blue.

Minimal Editorial Surface · 5 colors

Carolina 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 Carolina Blue carrying the quiet middle.

Modern Café Dominant · 5 colors

Carolina 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 #259FD0 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 13/100
Cool
Reads cool and recessive — calming, technical, good for trust-led UI.
Softness 52/100
Moderate
Middle-weight — neither delicate nor heavy.
Depth 34/100
Low
Mid depth — usable as an accent or a muted ground.
Naturalness 1/100
Very low
Reads engineered rather than organic — synthetic, digital.
Vintage feel 41/100
Moderate
A faint retro warmth without tipping into sepia.
Luxury 41/100
Moderate
Understated — leans refined without going austere.
Brand distinctiveness 48/100
Moderate
Recognisable but shares space with nearby hues.
UI accent fit 74/100
High
Strong interactive accent — visible and can carry a legible label.
Surface fit 30/100
Low
Usable as a tinted surface in measured doses.
Print safety 68/100
High
Prints close, with a slight loss of vibrancy.

Pairs with #259FD0

For UI
For branding
For interior
For fashion
People also use #259FD0 with

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 6.1:1. Use
Subtle surface Use #D7EAF2 for cards and hover fills. Tint 80
Avoid beside #2566D0 — 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 #259FD0 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

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: #259FD0;
  --color-base-rgb: 37 159 208;
  --color-base-oklch: oklch(66.1% 0.124 231.0);
  --color-50: #F1FAFD;
  --color-100: #DBF1FA;
  --color-200: #BAE3F3;
  --color-300: #8ACBE5;
  --color-400: #5FB2D3;
  --color-500: #3D95B8;
  --color-600: #35748C;
  --color-700: #2B5464;
  --color-800: #203841;
  --color-900: #152328;
  --color-on-base: #141310;
}