What color is #035138?

#035138 is a very dark, vivid teal-green. In RGB it is rgb(3, 81, 56), and in HSL hsl(161, 93%, 16%).

Is #035138 accessible as text?

On white, #035138 has a contrast ratio of 9.38:1 (passes WCAG AA for body text); on black it is 2.24:1 (fails). For text placed on #035138, use white for the best readability.

What is the closest Tailwind color to #035138?

The nearest Tailwind CSS token is emerald-900 (#004F3B).

What colors go well with #035138?

#035138 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #4F031B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #035138 below.

Is #035138 good for buttons?

#035138 works well for buttons and highlights, but use white text on #035138 — black text only reaches 2.24:1, below the 4.5:1 needed for normal-size labels.

Is #035138 the same as CSS darkslategray?

No — #035138 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#035138 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #035138

Not just a swatch — here's how #035138 works with other colors. Named schemes with #035138 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #035138 Secondary #496C3E Accent #AB6D00 Surface #EEEAD6 Anchor #3C2F20

Castleton 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

Lead #035138 Accent #A7C4BB Surface #E1D9BE Secondary #9AA0A0 Anchor #1B3548

Castleton 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

Accent #035138 Secondary #ADB4B7 Surface #F1F2F0 Support #7895A3 Anchor #2D3236

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

Vintage Leather Lead · 5 colors

Lead #035138 Secondary #744F1A Surface #E5DBC0 Accent #3B5141 Anchor #5B2320

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

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #035138 Secondary #5C7066 Support #989286 Ink #17140F

Castleton 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 Castleton Green carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #035138 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 40/100

Neutral

Balanced temperature — flexible, sits between warm and cool schemes.

Softness 35/100

Low

Middle-weight — neither delicate nor heavy.

Depth 60/100

High

Mid depth — usable as an accent or a muted ground.

Naturalness 65/100

High

Organic, earthy character — at home in wellness, food and craft brands.

Vintage feel 52/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 65/100

High

Restrained and premium — deep, quiet, high-end packaging and fashion.

Brand distinctiveness 22/100

Low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 60/100

High

Strong interactive accent — visible and can carry a legible label.

Surface fit 35/100

Low

Usable as a tinted surface in measured doses.

Print safety 84/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #035138

For UI

For branding

For interior

For fashion

People also use #035138 with

Green Prussian Blue Oxblood Platinum Dark Slate Gray

UI roles & guardrails

Primary action Safe as a filled button with white label. AAA

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 9.4:1. Use

Subtle surface Use #B7F1DF for cards and hover fills. Tint 80

Avoid beside #034D4F — 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 #035138 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

Every model

Export

:root {
  --color-base: #035138;
  --color-base-rgb: 3 81 56;
  --color-base-oklch: oklch(38.6% 0.081 164.0);
  --color-50: #F0FEFA;
  --color-100: #D8FDF1;
  --color-200: #B1FCE4;
  --color-300: #7CF4CE;
  --color-400: #4CE6B5;
  --color-500: #29CC98;
  --color-600: #279B76;
  --color-700: #226D55;
  --color-800: #1A4739;
  --color-900: #122B23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F0FEFA',
    100: '#D8FDF1',
    200: '#B1FCE4',
    300: '#7CF4CE',
    400: '#4CE6B5',
    500: '#29CC98',
    600: '#279B76',
    700: '#226D55',
    800: '#1A4739',
    900: '#122B23',
  },
}

$base: #035138;
$base-ink: #FFFFFF;
$base-50: #F0FEFA;
$base-100: #D8FDF1;
$base-200: #B1FCE4;
$base-300: #7CF4CE;
$base-400: #4CE6B5;
$base-500: #29CC98;
$base-600: #279B76;
$base-700: #226D55;
$base-800: #1A4739;
$base-900: #122B23;
$base-hover: #023F2C;
$base-subtle: #91ECCF;

{
    "color": {
        "base": {
            "value": "#035138",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0FEFA",
                "type": "color"
            },
            "100": {
                "value": "#D8FDF1",
                "type": "color"
            },
            "200": {
                "value": "#B1FCE4",
                "type": "color"
            },
            "300": {
                "value": "#7CF4CE",
                "type": "color"
            },
            "400": {
                "value": "#4CE6B5",
                "type": "color"
            },
            "500": {
                "value": "#29CC98",
                "type": "color"
            },
            "600": {
                "value": "#279B76",
                "type": "color"
            },
            "700": {
                "value": "#226D55",
                "type": "color"
            },
            "800": {
                "value": "#1A4739",
                "type": "color"
            },
            "900": {
                "value": "#122B23",
                "type": "color"
            }
        }
    }
}

Palettes built on #035138

Color Lab

Pairs with #035138

UI roles & guardrails

In real applications

Scales

Every model

Export