Nearest named color: Medium Sea Green
#42BB74
#42BB74
Nearest named
Medium Sea Green
Family
Green
Lightness
70.7%
Chroma
0.150
Hue angle
153.9°
Temperature
Neutral-leaning
Contrast on white
2.44:1 · Fail
Contrast on black
7.60:1 · AAA
Web-safe
#33CC66
CSS oklch()
71% 0.15 154

#42BB74 is a mid-toned, cool teal-green. On the Color Lab it reads organic and grounded. It sits well as a supporting tone.

Palettes built on #42BB74

Not just a swatch — here's how #42BB74 works with other colors. Named schemes with #42BB74 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Medium Sea Green leads this botanical set among foliage greens and a terracotta accent, softened by cream and grounded in bark brown.

Coastal Morning Lead · 5 colors

Medium 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

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

Warm Autumn Interior Dominant · 5 colors

This palette keeps Medium Sea Green as the dominant warm neutral, balanced by muted terracotta and olive earth tones and grounded by a deep espresso anchor.

Minimal Editorial Surface · 5 colors

Medium 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 Medium Sea Green carrying the quiet middle.

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Color Lab

How #42BB74 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 39/100
Neutral
Balanced temperature — flexible, sits between warm and cool schemes.
Softness 51/100
Moderate
Middle-weight — neither delicate nor heavy.
Depth 30/100
Low
Airy and open — recedes, leaves the composition light.
Naturalness 78/100
High
Organic, earthy character — at home in wellness, food and craft brands.
Vintage feel 39/100
Low
A faint retro warmth without tipping into sepia.
Luxury 36/100
Low
Understated — leans refined without going austere.
Brand distinctiveness 58/100
Moderate
Recognisable but shares space with nearby hues.
UI accent fit 58/100
Moderate
Workable accent with care around contrast.
Surface fit 27/100
Low
Too saturated or mid-toned for big areas — keep it to accents.
Print safety 68/100
High
Prints close, with a slight loss of vibrancy.

Pairs with #42BB74

For UI
For branding
For interior
For fashion
People also use #42BB74 with

UI roles & guardrails

Primary action Safe as a filled button with near-black label. AAA
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 7.6:1. Use
Subtle surface Use #DDEEE4 for cards and hover fills. Tint 80
Avoid beside #42BD9E — 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 #42BB74 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: #42BB74;
  --color-base-rgb: 66 187 116;
  --color-base-oklch: oklch(70.7% 0.150 153.9);
  --color-50: #F3FBF7;
  --color-100: #E0F5E9;
  --color-200: #C3EAD3;
  --color-300: #99D7B2;
  --color-400: #71C192;
  --color-500: #50A573;
  --color-600: #437F5C;
  --color-700: #345B44;
  --color-800: #253C2F;
  --color-900: #18251E;
  --color-on-base: #141310;
}