What color is #121B25?

#121B25 is a very dark low-chroma blue-gray with a subtle blue cast. In RGB it is rgb(18, 27, 37), and in HSL hsl(212, 35%, 11%).

Is #121B25 accessible as text?

On white, #121B25 has a contrast ratio of 17.37:1 (passes WCAG AA for body text); on black it is 1.21:1 (fails). For text placed on #121B25, use white for the best readability.

What is the closest Tailwind color to #121B25?

The nearest Tailwind CSS token is gray-900 (#101828).

What colors go well with #121B25?

As a neutral, #121B25 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 #121B25 the same as CSS midnightblue?

No — #121B25 is not the CSS named color midnightblue, but midnightblue (#191970) 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.

#121B25 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #121B25

Not just a swatch — here's how #121B25 works with other colors. Named schemes with #121B25 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #121B25 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Graphite 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 #121B25 Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

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

Tech Product Signal · 5 colors

Signal #121B25 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #303842

Graphite is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Graphite.

Vintage Leather Lead · 5 colors

Lead #121B25 Secondary #7F4537 Surface #E1DDC0 Accent #375245 Anchor #57233B

Graphite 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 #F6F4EF Accent #121B25 Secondary #3A3D41 Support #959386 Ink #16140F

Graphite 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 Graphite carrying the quiet middle.

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Color Lab

How #121B25 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 43/100

Neutral

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

Softness 24/100

Low

Firm and assertive — carries weight and contrast.

Depth 73/100

High

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

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 20/100

Low

Clean and current — no dusty, aged cast.

Luxury 73/100

High

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

Brand distinctiveness 9/100

Very low

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

UI accent fit 11/100

Very low

Weak as an action color — too pale, too dark or too muted to signal.

Surface fit 64/100

High

Calm enough for large fills — backgrounds, cards, sections.

Print safety 95/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #121B25

For UI

For branding

For interior

For fashion

People also use #121B25 with

Onyx Graphite Gainsboro Charcoal

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 17.4:1. Use

Subtle surface Use #C6D1DD for cards and hover fills. Tint 80

Avoid beside #121526 — 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 #121B25 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: #121B25;
  --color-base-rgb: 18 27 37;
  --color-base-oklch: oklch(21.8% 0.024 251.5);
  --color-50: #F4F7FA;
  --color-100: #E3EAF2;
  --color-200: #C8D5E4;
  --color-300: #A1B6CE;
  --color-400: #7C97B6;
  --color-500: #5C7899;
  --color-600: #4B5F77;
  --color-700: #394656;
  --color-800: #283039;
  --color-900: #1A1E23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  graphite: {
    50: '#F4F7FA',
    100: '#E3EAF2',
    200: '#C8D5E4',
    300: '#A1B6CE',
    400: '#7C97B6',
    500: '#5C7899',
    600: '#4B5F77',
    700: '#394656',
    800: '#283039',
    900: '#1A1E23',
  },
}

$base: #121B25;
$base-ink: #FFFFFF;
$base-50: #F4F7FA;
$base-100: #E3EAF2;
$base-200: #C8D5E4;
$base-300: #A1B6CE;
$base-400: #7C97B6;
$base-500: #5C7899;
$base-600: #4B5F77;
$base-700: #394656;
$base-800: #283039;
$base-900: #1A1E23;
$base-hover: #0F161E;
$base-subtle: #A9BACD;

{
    "color": {
        "base": {
            "value": "#121B25",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F7FA",
                "type": "color"
            },
            "100": {
                "value": "#E3EAF2",
                "type": "color"
            },
            "200": {
                "value": "#C8D5E4",
                "type": "color"
            },
            "300": {
                "value": "#A1B6CE",
                "type": "color"
            },
            "400": {
                "value": "#7C97B6",
                "type": "color"
            },
            "500": {
                "value": "#5C7899",
                "type": "color"
            },
            "600": {
                "value": "#4B5F77",
                "type": "color"
            },
            "700": {
                "value": "#394656",
                "type": "color"
            },
            "800": {
                "value": "#283039",
                "type": "color"
            },
            "900": {
                "value": "#1A1E23",
                "type": "color"
            }
        }
    }
}

Palettes built on #121B25

Color Lab

Pairs with #121B25

UI roles & guardrails

In real applications

Scales

Every model

Export