What color is #403F02?

#403F02 is a very dark, vivid yellow. In RGB it is rgb(64, 63, 2), and in HSL hsl(59, 94%, 13%).

Is #403F02 accessible as text?

On white, #403F02 has a contrast ratio of 10.88:1 (passes WCAG AA for body text); on black it is 1.93:1 (fails). For text placed on #403F02, use white for the best readability.

What is the closest Tailwind color to #403F02?

The nearest Tailwind CSS token is lime-900 (#35530E).

What colors go well with #403F02?

#403F02 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #020340. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #403F02 below.

Is #403F02 good for buttons?

#403F02 works well for buttons and highlights, but use white text on #403F02 — black text only reaches 1.93:1, below the 4.5:1 needed for normal-size labels.

Is #403F02 the same as CSS darkslategray?

No — #403F02 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.

#403F02 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #403F02

Not just a swatch — here's how #403F02 works with other colors. Named schemes with #403F02 in its natural role, and a note on why the supporting colors balance it.

Warm Autumn Interior Dominant · 5 colors

Dominant #403F02 Secondary #B16909 Accent #6D7A49 Surface #F2ECDD 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 #403F02 Secondary #774C1F Surface #E7DAC0 Accent #3E513E Anchor #5B2326

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 #403F02 Secondary #526A37 Accent #B16909 Surface #EFE9D6 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 #403F02 Surface #DFD0A8 Secondary #AD7C50 Accent #8F9A71 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 #403F02 Secondary #636453 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 #403F02 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 62/100

Neutral

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

Softness 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 63/100

High

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

Naturalness 67/100

High

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

Vintage feel 60/100

Moderate

Faded, nostalgic quality — editorial, heritage and retro work.

Luxury 67/100

High

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

Brand distinctiveness 29/100

Low

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

UI accent fit 50/100

Moderate

Workable accent with care around contrast.

Surface fit 39/100

Low

Usable as a tinted surface in measured doses.

Print safety 86/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #403F02

For UI

For branding

For interior

For fashion

People also use #403F02 with

Sepia British Racing Green Navy Platinum 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 10.9:1. Use

Subtle surface Use #F1F0B5 for cards and hover fills. Tint 80

Avoid beside #2D4002 — 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 #403F02 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

Every model

Export

:root {
  --color-base: #403F02;
  --color-base-rgb: 64 63 2;
  --color-base-oklch: oklch(35.7% 0.076 108.7);
  --color-50: #FEFEF0;
  --color-100: #FDFDD8;
  --color-200: #FCFAB1;
  --color-300: #F4F27B;
  --color-400: #E7E44B;
  --color-500: #CDCA28;
  --color-600: #9B9926;
  --color-700: #6D6C21;
  --color-800: #47461A;
  --color-900: #2B2B12;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  espresso: {
    50: '#FEFEF0',
    100: '#FDFDD8',
    200: '#FCFAB1',
    300: '#F4F27B',
    400: '#E7E44B',
    500: '#CDCA28',
    600: '#9B9926',
    700: '#6D6C21',
    800: '#47461A',
    900: '#2B2B12',
  },
}

$base: #403F02;
$base-ink: #FFFFFF;
$base-50: #FEFEF0;
$base-100: #FDFDD8;
$base-200: #FCFAB1;
$base-300: #F4F27B;
$base-400: #E7E44B;
$base-500: #CDCA28;
$base-600: #9B9926;
$base-700: #6D6C21;
$base-800: #47461A;
$base-900: #2B2B12;
$base-hover: #333302;
$base-subtle: #ECEA8D;

{
    "color": {
        "base": {
            "value": "#403F02",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FEFEF0",
                "type": "color"
            },
            "100": {
                "value": "#FDFDD8",
                "type": "color"
            },
            "200": {
                "value": "#FCFAB1",
                "type": "color"
            },
            "300": {
                "value": "#F4F27B",
                "type": "color"
            },
            "400": {
                "value": "#E7E44B",
                "type": "color"
            },
            "500": {
                "value": "#CDCA28",
                "type": "color"
            },
            "600": {
                "value": "#9B9926",
                "type": "color"
            },
            "700": {
                "value": "#6D6C21",
                "type": "color"
            },
            "800": {
                "value": "#47461A",
                "type": "color"
            },
            "900": {
                "value": "#2B2B12",
                "type": "color"
            }
        }
    }
}

Palettes built on #403F02

Color Lab

Pairs with #403F02

UI roles & guardrails

In real applications

Scales

Every model

Export