Tailwind CSS v3 color

Tailwind stone-950 #0C0A09

Tailwind CSS v3's stone-950 is #0C0A09. It is a near-black in the neutral family. In OKLCH it sits at lightness 0.147 with chroma 0.004, too low for hue to matter. The nearest CSS named color is black (#000000), ΔE2000 1.8 away.

Relative luminance
0.0031
OKLCH L · C · h
0.147 · 0.004 · 49.2
Best text
White 19.75:1
Hue family
Neutral
Inspect this color Check contrast

#0C0A09 color codes

HEX
#0C0A09
RGB
rgb(12, 10, 9)
HSL
hsl(20, 14%, 4%)
OKLCH
oklch(0.147 0.004 49.2)
OKLab
oklab(0.147 0.003 0.003)
CIELAB (D65)
L* 2.85, a* 0.41, b* 0.57
XYZ (D65)
X 0.31, Y 0.31, Z 0.30
CMYK (naive)
cmyk(0%, 17%, 25%, 95%)

CIELAB and XYZ use the D65 white point; CSS lab() uses D50, so paste the OKLCH or HEX value into stylesheets. CMYK here is a plain formula with no press profile.

Legibility

Contrast: is #0C0A09 accessible?

White text on it reaches 19.75:1, passing AAA. Black text fails at 1.06:1.

WCAG 2 gives the same ratio whichever color is the text; APCA does not, so its Lc changes sign and size with polarity.

Open the Contrast System

  • Black text on it

    1.06:1

    • AA fails
    • AA large fails
    • AAA fails
    • APCA Lc 0

    Text is here, unreadable at 1.06:1

  • White text on it

    19.75:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc −107

  • As text on black

    1.06:1

    • AA fails
    • AA large fails
    • AAA fails
    • APCA Lc 0

    Text is here, unreadable at 1.06:1

  • As text on white

    19.75:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc +105

Nearest versions that pass 4.5:1

  • For text on white

    #0C0A09 19.75:1

    It already reaches 19.75:1 on white, so no change is needed.

  • For text on black

    #777473 4.53:1

    Lightening its OKLCH lightness from 0.15 to 0.56 reaches 4.53:1 on black, keeping the hue.

    Compare both in the Contrast System

Checking another pair? Use the Contrast Checker.

Studio

Adjust #0C0A09 live

Move lightness, chroma and hue in OKLCH, or drag on the map. The map is every lightness and chroma at the current hue: sRGB inside the solid area, Display P3 out to the dashed line.

The studio needs JavaScript.

Scale

Shades and tints of #0C0A09

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #0C0A09 sits at step 950.

  1. 50#F7F4F3
    White
    1.09
    Black
    19.18
  2. 100#EDEAE9
    White
    1.19
    Black
    17.54
  3. 200#D9D7D5
    White
    1.43
    Black
    14.63
  4. 300#C0BDBB
    White
    1.86
    Black
    11.23
  5. 400#A4A19F
    White
    2.56
    Black
    8.17
  6. 500#888584
    White
    3.66
    Black
    5.73
  7. 600#716E6D
    White
    5.05
    Black
    4.15
  8. 700#5A5756
    White
    7.16
    Black
    2.93
  9. 800#413F3E
    White
    10.47
    Black
    2.00
  10. 900#2A2827
    White
    14.67
    Black
    1.43
  11. 950This color#0C0A09
    White
    19.75
    Black
    1.06

Under each step, white and black text on it; a bold figure passes 4.5:1.

Tailwind CSS v3 stone scale

The real Tailwind palette, for comparison with the computed ramp above.

  1. 50#FAFAF9
    White
    1.04
    Black
    20.10
  2. 100#F5F5F4
    White
    1.09
    Black
    19.24
  3. 200#E7E5E4
    White
    1.25
    Black
    16.72
  4. 300#D6D3D1
    White
    1.48
    Black
    14.09
  5. 400#A8A29E
    White
    2.52
    Black
    8.32
  6. 500#78716C
    White
    4.79
    Black
    4.37
  7. 600#57534E
    White
    7.62
    Black
    2.75
  8. 700#44403C
    White
    10.27
    Black
    2.04
  9. 800#292524
    White
    15.16
    Black
    1.38
  10. 900#1C1917
    White
    17.48
    Black
    1.20
  11. 950This color#0C0A09
    White
    19.75
    Black
    1.06

Gamut

How vivid #0C0A09 can get

A gray has no hue, so no gamut holds a more vivid version of #0C0A09: more chroma would make it another color.

0.00.20.40.60.80.20.40.60.8 460480500520540560580600620
  • sRGB
  • Display P3
  • Rec. 2020
  • Dominant wavelength
OKLCH chroma
0.004
sRGB edge
No hue
Display P3 edge
No hue
Rec. 2020 edge
No hue
Dominant wavelength
586 nm
Excitation purity
9%
Chromaticity
x 0.3337, y 0.3397

Mixing

Mixing #0C0A09

Each row is the same mix worked out in a different space, with the halfway color at its end. sRGB, which older CSS gradients use, can sag gray or dark in the middle; OKLab keeps the lightness steps even; OKLCH holds chroma and hue as it goes.

White #FFFFFF

  • sRGB50%#868584
  • OKLab50%#797877
  • OKLCH50%#797877

Black #000000

  • sRGB50%#060505
  • OKLab50%#020101
  • OKLCH50%#020101
In CSS
/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #0c0a09, white);
color: color-mix(in oklch, #0c0a09 50%, white);

In use

#0C0A09 in an interface

A button, a link, a heading, a focused field, an icon and a chart line in this color, on a light page and a dark one. Each check is a WCAG 2 contrast minimum: 1.4.3 for text, 1.4.11 for the rest.

Light page

  • Button labelText, 4.5:119.75:1 Passes
  • Link and body-size textText, 4.5:119.75:1 Passes
  • Large headingLarge text, 3:119.75:1 Passes
  • Icons, borders and focus ringsNon-text, 3:119.75:1 Passes

Dark page

  • Button labelText, 4.5:119.75:1 Passes
  • Link and body-size textText, 4.5:11.05:1 Fails
  • Large headingLarge text, 3:11.05:1 Fails
  • Icons, borders and focus ringsNon-text, 3:11.05:1 Fails

Color vision

How #0C0A09 looks with color blindness

As a neutral it barely changes under any simulation, ΔE2000 1.1 at most.

Simulated with Machado et al. (2009) at full severity, in linear light.

Simulate a whole page What each type sees

  • Protanopia

    No working red (long-wavelength) cones

    #0B0A09 ΔE2000 0.4

    Imperceptible

    Reads as near-black

  • Deuteranopia

    No working green (medium-wavelength) cones

    #0B0B09 ΔE2000 1.1

    Very close

    Reads as near-black

  • Tritanopia

    No working blue (short-wavelength) cones

    #0D0A0A ΔE2000 0.7

    Imperceptible

    Reads as near-black

  • Achromatopsia

    No cone color vision; lightness only

    #0A0A0A ΔE2000 0.8

    Imperceptible

    Reads as near-black

Pairing check

A near-neutral has no complementary hue to pair with, so tell it apart from neighboring grays by lightness contrast alone.

Harmony

Color harmonies for #0C0A09

A neutral has no hue to rotate, so every harmony collapses back to the same gray. Pair it with an accent color instead.

Or pair it by lightness: steps of its own scale as text on it, and what each can carry.

Build a lightness scale in Harmony Studio

  • Step 50 #F7F4F3 · 18.05:1

    Body text, AAA

  • Step 300 #C0BDBB · 10.57:1

    Body text, AAA

  • Step 700 #5A5756 · 2.75:1

    Decoration only, under 3:1

Code

Design tokens

Ready-to-paste tokens in six formats. Rename them to fit your system.

CSS custom property

:root {
  --color-stone-950: #0c0a09;
}

Tailwind config

// tailwind.config.js — already built in as stone-950;
// pin the v3 value explicitly like this:
module.exports = {
  theme: {
    extend: {
      colors: {
        stone: { 950: '#0c0a09' },
      },
    },
  },
};

Tailwind v4 theme

/* app.css — Tailwind CSS v4 */
@import "tailwindcss";

@theme {
  /* v4 has its own stone-950; this pins the v3 value. */
  --color-stone-950: oklch(0.147 0.004 49.2);
}

Design token (W3C DTCG)

{
  "color": {
    "stone-950": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0.0471, 0.0392, 0.0353],
        "hex": "#0c0a09"
      },
      "$description": "Tailwind CSS v3 stone-950"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let stone950 = Color(.sRGB, red: 0.047, green: 0.039, blue: 0.035, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Stone950 = Color(0xFF0C0A09)
}

Matches

The nearest match in each system

The closest CSS name, Tailwind shade, RAL Classic paint and Crayola crayon by ΔE2000; under 2 is hard to tell apart side by side. RAL and Crayola values approximate physical colors.

Neighbors

The eight nearest colors on this site by ΔE2000, closest first. Under 2 is hard to tell apart side by side.

Tools

Open #0C0A09 in the tools

Each opens over this page. More colors live in the Color Library, and every color page is listed on the hub.