What color is #263E37?

#263E37 is a dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(38, 62, 55), and in HSL hsl(163, 24%, 20%).

Is #263E37 accessible as text?

On white, #263E37 has a contrast ratio of 11.50:1 (passes WCAG AA for body text); on black it is 1.83:1 (fails). For text placed on #263E37, use white for the best readability.

What is the closest Tailwind color to #263E37?

The nearest Tailwind CSS token is neutral-700 (#404040).

What colors go well with #263E37?

As a neutral, #263E37 pairs cleanly with white, off-white and light grays for text, and sits under accent hues like blue, violet, emerald or warm orange — use it as a dark surface or high-contrast base and let the accent carry the color.

Is #263E37 the same as CSS darkslategray?

No — #263E37 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.

#263E37 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #263E37

Not just a swatch — here's how #263E37 works with other colors. Named schemes with #263E37 in its natural role, and a note on why the supporting colors balance it.

Vintage Leather Lead · 5 colors

Lead #263E37 Secondary #734F19 Surface #E4DBC0 Accent #3B5141 Anchor #5B231F

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

Japanese Sand Base · 5 colors

Base #263E37 Surface #EDEADC Highlight #F5F1E7 Secondary #B5B19F Ink #2A2723

Onyx sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Luxury Packaging Feature · 5 colors

Feature #263E37 Anchor #141210 Accent #BCA84C Secondary #1F2C28 Surface #F1EDE3

Onyx carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.

Moody Editorial Color · 5 colors

Color #263E37 Anchor #292A2E Secondary #6D6F74 Surface #EBE7DA Accent #0E1E1E

Onyx adds the colour to this moody editorial scheme — charcoal and a mid-grey around it, a bone highlight, and a muted jewel accent drawn from Onyx.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #263E37 Secondary #58605D Support #989286 Ink #16140F

Onyx 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 Onyx carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #263E37 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 45/100

Neutral

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

Softness 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 62/100

High

Deep and grounding — anchors a layout, strong dark-mode base.

Naturalness 21/100

Low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 33/100

Low

A faint retro warmth without tipping into sepia.

Luxury 65/100

High

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

Brand distinctiveness 13/100

Very low

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

UI accent fit 34/100

Low

Workable accent with care around contrast.

Surface fit 53/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 93/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #263E37

For UI

For branding

For interior

For fashion

People also use #263E37 with

Hunter Green Gunmetal Gray Bistre 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 11.5:1. Use

Subtle surface Use #CFDDD9 for cards and hover fills. Tint 80

Avoid beside #273E3F — 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 #263E37 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: #263E37;
  --color-base-rgb: 38 62 55;
  --color-base-oklch: oklch(34.2% 0.032 174.0);
  --color-50: #F5F9F8;
  --color-100: #E5F0ED;
  --color-200: #CCE0DA;
  --color-300: #A8C7BE;
  --color-400: #85ADA2;
  --color-500: #659084;
  --color-600: #527067;
  --color-700: #3E514C;
  --color-800: #2B3633;
  --color-900: #1B2220;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  onyx: {
    50: '#F5F9F8',
    100: '#E5F0ED',
    200: '#CCE0DA',
    300: '#A8C7BE',
    400: '#85ADA2',
    500: '#659084',
    600: '#527067',
    700: '#3E514C',
    800: '#2B3633',
    900: '#1B2220',
  },
}

$base: #263E37;
$base-ink: #FFFFFF;
$base-50: #F5F9F8;
$base-100: #E5F0ED;
$base-200: #CCE0DA;
$base-300: #A8C7BE;
$base-400: #85ADA2;
$base-500: #659084;
$base-600: #527067;
$base-700: #3E514C;
$base-800: #2B3633;
$base-900: #1B2220;
$base-hover: #1F332D;
$base-subtle: #B7CDC7;

{
    "color": {
        "base": {
            "value": "#263E37",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F9F8",
                "type": "color"
            },
            "100": {
                "value": "#E5F0ED",
                "type": "color"
            },
            "200": {
                "value": "#CCE0DA",
                "type": "color"
            },
            "300": {
                "value": "#A8C7BE",
                "type": "color"
            },
            "400": {
                "value": "#85ADA2",
                "type": "color"
            },
            "500": {
                "value": "#659084",
                "type": "color"
            },
            "600": {
                "value": "#527067",
                "type": "color"
            },
            "700": {
                "value": "#3E514C",
                "type": "color"
            },
            "800": {
                "value": "#2B3633",
                "type": "color"
            },
            "900": {
                "value": "#1B2220",
                "type": "color"
            }
        }
    }
}