What color is #423F1B?

#423F1B is a dark yellow. In RGB it is rgb(66, 63, 27), and in HSL hsl(55, 42%, 18%).

Is #423F1B accessible as text?

On white, #423F1B has a contrast ratio of 10.72:1 (passes WCAG AA for body text); on black it is 1.96:1 (fails). For text placed on #423F1B, use white for the best readability.

What is the closest Tailwind color to #423F1B?

The nearest Tailwind CSS token is olive-700 (#474739).

What colors go well with #423F1B?

#423F1B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #1B1E41. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #423F1B below.

Is #423F1B good for buttons?

#423F1B works well for buttons and highlights, but use white text on #423F1B — black text only reaches 1.96:1, below the 4.5:1 needed for normal-size labels.

Is #423F1B the same as CSS darkslategray?

No — #423F1B 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.

#423F1B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #423F1B

Not just a swatch — here's how #423F1B works with other colors. Named schemes with #423F1B in its natural role, and a note on why the supporting colors balance it.

Warm Autumn Interior Dominant · 5 colors

Dominant #423F1B Secondary #B1680B Accent #6E7A48 Surface #F3ECDD Anchor #3A2B1F

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

Vintage Leather Lead · 5 colors

Lead #423F1B Secondary #784C1F Surface #E7DAC0 Accent #3E513E Anchor #5B2226

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

Botanical Studio Lead · 5 colors

Lead #423F1B Secondary #536A36 Accent #B1680B Surface #F0E9D6 Anchor #3D2F21

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

Desert Clay Center · 5 colors

Center #423F1B Surface #DFCFA8 Secondary #AD7C51 Accent #909971 Anchor #3D2D1F

Espresso holds the warm center of this desert palette with sand and clay beside it, a muted-sage accent and a dark-brown anchor.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #423F1B Secondary #656458 Support #999186 Ink #17140F

Espresso 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 Espresso carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #423F1B 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 59/100

Neutral

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

Softness 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 61/100

High

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

Naturalness 53/100

Moderate

Loosely natural — an earthy edge without being rustic.

Vintage feel 53/100

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 21/100

Low

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

UI accent fit 45/100

Moderate

Workable accent with care around contrast.

Surface fit 45/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 91/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #423F1B

For UI

For branding

For interior

For fashion

People also use #423F1B with

Espresso British Racing Green Navy Greige Army Green

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 10.7:1. Use

Subtle surface Use #E2E0C9 for cards and hover fills. Tint 80

Avoid beside #38411B — 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 #423F1B 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: #423F1B;
  --color-base-rgb: 66 63 27;
  --color-base-oklch: oklch(36.2% 0.054 104.5);
  --color-50: #FBFAF4;
  --color-100: #F4F2E2;
  --color-200: #E7E4C5;
  --color-300: #D3CE9C;
  --color-400: #BCB676;
  --color-500: #9F9955;
  --color-600: #7B7747;
  --color-700: #585636;
  --color-800: #3B3926;
  --color-900: #242319;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  espresso: {
    50: '#FBFAF4',
    100: '#F4F2E2',
    200: '#E7E4C5',
    300: '#D3CE9C',
    400: '#BCB676',
    500: '#9F9955',
    600: '#7B7747',
    700: '#585636',
    800: '#3B3926',
    900: '#242319',
  },
}

$base: #423F1B;
$base-ink: #FFFFFF;
$base-50: #FBFAF4;
$base-100: #F4F2E2;
$base-200: #E7E4C5;
$base-300: #D3CE9C;
$base-400: #BCB676;
$base-500: #9F9955;
$base-600: #7B7747;
$base-700: #585636;
$base-800: #3B3926;
$base-900: #242319;
$base-hover: #343215;
$base-subtle: #D4D1AC;

{
    "color": {
        "base": {
            "value": "#423F1B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FBFAF4",
                "type": "color"
            },
            "100": {
                "value": "#F4F2E2",
                "type": "color"
            },
            "200": {
                "value": "#E7E4C5",
                "type": "color"
            },
            "300": {
                "value": "#D3CE9C",
                "type": "color"
            },
            "400": {
                "value": "#BCB676",
                "type": "color"
            },
            "500": {
                "value": "#9F9955",
                "type": "color"
            },
            "600": {
                "value": "#7B7747",
                "type": "color"
            },
            "700": {
                "value": "#585636",
                "type": "color"
            },
            "800": {
                "value": "#3B3926",
                "type": "color"
            },
            "900": {
                "value": "#242319",
                "type": "color"
            }
        }
    }
}

Palettes built on #423F1B

Color Lab

Pairs with #423F1B

UI roles & guardrails

In real applications

Scales

Every model

Export