Nearest named color: Light Sea Green
#31AAA0
#31AAA0
Nearest named
Light Sea Green
Family
Blue
Lightness
67.1%
Chroma
0.105
Hue angle
186.9°
Temperature
Cool
Contrast on white
2.84:1 · Fail
Contrast on black
6.54:1 · AA
Web-safe
#339999
CSS oklch()
67% 0.10 187

#31AAA0 is a mid-toned, cool cyan. It carries a legible label as a UI accent and sits well as a supporting tone.

Palettes built on #31AAA0

Not just a swatch — here's how #31AAA0 works with other colors. Named schemes with #31AAA0 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Light Sea Green 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

Light Sea Green keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Minimal Editorial Surface · 5 colors

Light Sea Green 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 Light Sea Green carrying the quiet middle.

Tech Product Signal · 5 colors

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

Modern Café Dominant · 5 colors

Light Sea Green 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.

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Color Lab

How #31AAA0 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 27/100
Cool
Reads cool and recessive — calming, technical, good for trust-led UI.
Softness 55/100
Moderate
Middle-weight — neither delicate nor heavy.
Depth 33/100
Low
Mid depth — usable as an accent or a muted ground.
Naturalness 26/100
Low
Loosely natural — an earthy edge without being rustic.
Vintage feel 49/100
Moderate
A faint retro warmth without tipping into sepia.
Luxury 41/100
Moderate
Understated — leans refined without going austere.
Brand distinctiveness 40/100
Moderate
Recognisable but shares space with nearby hues.
UI accent fit 67/100
High
Strong interactive accent — visible and can carry a legible label.
Surface fit 37/100
Low
Usable as a tinted surface in measured doses.
Print safety 75/100
High
Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #31AAA0

For UI
For branding
For interior
For fashion

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 Only on dark surfaces. Avoid
Background Pair with #141310 text at 6.5:1. Use
Subtle surface Use #D6EDEC for cards and hover fills. Tint 80
Avoid beside #318CAA — 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 #31AAA0 at work across the surfaces designers actually ship.

Website / UI
Northwind Sign up
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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: #31AAA0;
  --color-base-rgb: 49 170 160;
  --color-base-oklch: oklch(67.1% 0.105 186.9);
  --color-50: #F3FCFB;
  --color-100: #DFF6F4;
  --color-200: #C0EDE9;
  --color-300: #94DBD5;
  --color-400: #6BC7BF;
  --color-500: #4AABA3;
  --color-600: #3F837D;
  --color-700: #315E5A;
  --color-800: #233E3B;
  --color-900: #172625;
  --color-on-base: #141310;
}