Nearest named color: Slate Blue
#6153BC
#6153BC
Nearest named
Slate Blue
Family
Blue
Lightness
51.2%
Chroma
0.159
Hue angle
285.4°
Temperature
Cool
Contrast on white
6.05:1 · AA
Contrast on black
3.07:1 · AA Large
Web-safe
#6666CC
CSS oklch()
51% 0.16 285

#6153BC is a mid-toned, cool purple. 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 #6153BC

Not just a swatch — here's how #6153BC works with other colors. Named schemes with #6153BC in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

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

Vintage Leather Lead · 5 colors

Slate Blue plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Modern Café Dominant · 5 colors

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.

Berry & Cream Lead · 5 colors

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

Minimal Editorial Surface · 5 colors

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 Slate Blue carrying the quiet middle.

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Color Lab

How #6153BC 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 23/100
Cool
Reads cool and recessive — calming, technical, good for trust-led UI.
Softness 37/100
Low
Middle-weight — neither delicate nor heavy.
Depth 51/100
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 40/100
Moderate
A faint retro warmth without tipping into sepia.
Luxury 53/100
Moderate
Understated — leans refined without going austere.
Brand distinctiveness 43/100
Moderate
Recognisable but shares space with nearby hues.
UI accent fit 98/100
Very high
Strong interactive accent — visible and can carry a legible label.
Surface fit 9/100
Very low
Too saturated or mid-toned for big areas — keep it to accents.
Print safety 77/100
High
Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #6153BC

For UI
For branding
For interior
For fashion

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 6.0:1. Use
Subtle surface Use #E1DFEF for cards and hover fills. Tint 80
Avoid beside #8452BC — 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 #6153BC 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: #6153BC;
  --color-base-rgb: 97 83 188;
  --color-base-oklch: oklch(51.2% 0.159 285.4);
  --color-50: #F5F4FB;
  --color-100: #E4E1F4;
  --color-200: #C9C4E8;
  --color-300: #A39BD4;
  --color-400: #7E75BD;
  --color-500: #5E54A1;
  --color-600: #4D467C;
  --color-700: #3A3659;
  --color-800: #29263B;
  --color-900: #1A1925;
  --color-on-base: #FFFFFF;
}