What color is #37331A?

#37331A is a very dark yellow. In RGB it is rgb(55, 51, 26), and in HSL hsl(52, 36%, 16%).

Is #37331A accessible as text?

On white, #37331A has a contrast ratio of 12.72:1 (passes WCAG AA for body text); on black it is 1.65:1 (fails). For text placed on #37331A, use white for the best readability.

What is the closest Tailwind color to #37331A?

The nearest Tailwind CSS token is olive-800 (#2B2B22).

What colors go well with #37331A?

#37331A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #1A1E37. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #37331A below.

Is #37331A good for buttons?

#37331A works well for buttons and highlights, but use white text on #37331A — black text only reaches 1.65:1, below the 4.5:1 needed for normal-size labels.

Is #37331A the same as CSS darkslategray?

No — #37331A 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.

#37331A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #37331A

Not just a swatch — here's how #37331A works with other colors. Named schemes with #37331A in its natural role, and a note on why the supporting colors balance it.

Warm Autumn Interior Dominant · 5 colors

Dominant #37331A Secondary #B1680D Accent #6E7A48 Surface #F3ECDD Anchor #3A2A1F

This palette keeps Bistre 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 #37331A Secondary #784C1F Surface #E7DAC0 Accent #3F503D Anchor #5B2227

Bistre 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 #37331A Secondary #536A36 Accent #B1680D Surface #F0E9D6 Anchor #3D2E21

Bistre 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 #37331A Surface #DFCFA8 Secondary #AD7C51 Accent #909971 Anchor #3D2D1F

Bistre 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 #37331A Secondary #59584F Support #999186 Ink #17140F

Bistre 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 Bistre carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #37331A 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 58/100

Neutral

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

Softness 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 65/100

High

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

Naturalness 46/100

Moderate

Loosely natural — an earthy edge without being rustic.

Vintage feel 45/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 67/100

High

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

Brand distinctiveness 16/100

Very low

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

UI accent fit 31/100

Low

Workable accent with care around contrast.

Surface fit 52/100

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 #37331A

For UI

For branding

For interior

For fashion

People also use #37331A with

Espresso Bottle Green Graphite 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 12.7:1. Use

Subtle surface Use #DFDCC9 for cards and hover fills. Tint 80

Avoid beside #32371A — 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 #37331A 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: #37331A;
  --color-base-rgb: 55 51 26;
  --color-base-oklch: oklch(31.8% 0.040 100.3);
  --color-50: #FAFAF4;
  --color-100: #F2F0E3;
  --color-200: #E5E1C8;
  --color-300: #CFC9A0;
  --color-400: #B7AF7B;
  --color-500: #9A925B;
  --color-600: #77714A;
  --color-700: #565239;
  --color-800: #393728;
  --color-900: #23221A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  bistre: {
    50: '#FAFAF4',
    100: '#F2F0E3',
    200: '#E5E1C8',
    300: '#CFC9A0',
    400: '#B7AF7B',
    500: '#9A925B',
    600: '#77714A',
    700: '#565239',
    800: '#393728',
    900: '#23221A',
  },
}

$base: #37331A;
$base-ink: #FFFFFF;
$base-50: #FAFAF4;
$base-100: #F2F0E3;
$base-200: #E5E1C8;
$base-300: #CFC9A0;
$base-400: #B7AF7B;
$base-500: #9A925B;
$base-600: #77714A;
$base-700: #565239;
$base-800: #393728;
$base-900: #23221A;
$base-hover: #2C2915;
$base-subtle: #D0CCAD;

{
    "color": {
        "base": {
            "value": "#37331A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FAFAF4",
                "type": "color"
            },
            "100": {
                "value": "#F2F0E3",
                "type": "color"
            },
            "200": {
                "value": "#E5E1C8",
                "type": "color"
            },
            "300": {
                "value": "#CFC9A0",
                "type": "color"
            },
            "400": {
                "value": "#B7AF7B",
                "type": "color"
            },
            "500": {
                "value": "#9A925B",
                "type": "color"
            },
            "600": {
                "value": "#77714A",
                "type": "color"
            },
            "700": {
                "value": "#565239",
                "type": "color"
            },
            "800": {
                "value": "#393728",
                "type": "color"
            },
            "900": {
                "value": "#23221A",
                "type": "color"
            }
        }
    }
}

Palettes built on #37331A

Color Lab

Pairs with #37331A

UI roles & guardrails

In real applications

Scales

Every model

Export