#040B04
Closest named color: Almost Black (#070D0D). oklch(13.8% 0.023 144.2), rgb(4, 11, 4).
Aa
White text reads best on this color (19.90:1).
About this color
#040B04 is a very dark close to neutral grey. In OKLCH its lightness is 14%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Almost Black (#070D0D), ΔE 0.024 away. White text reads best on it, at 19.90:1.
| Hue family | Neutrals |
| Lightness | very dark (14%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.05:1 |
| White text | 19.90:1 |
Values
| HEX | #040B04 |
| RGB | rgb(4, 11, 4) |
| HSL | hsl(120, 47%, 3%) |
| OKLCH | oklch(13.8% 0.023 144.2) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #040B04 | 19.90:1 | AAA | Lc -107.7 | Preferred for body text |
| Black text on #040B04 | 1.05:1 | Fails | Lc 0.0 | Not readable |
| #040B04 text on white | 19.90:1 | AAA | Lc 105.9 | Preferred for body text |
| #040B04 text on black | 1.05:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E7EBE7
oklch(93.6% 0.007 145.5)
-
Step 200
200
#D3DCD3
oklch(88.5% 0.016 145.4)
-
Step 300
300
#B7C5B6
oklch(80.8% 0.026 143.5)
-
Step 400
400
#91A890
oklch(70.7% 0.043 144)
-
Step 500
500
#759375
oklch(63.2% 0.056 144.9)
-
Step 600
600
#5E7D5D
oklch(55.7% 0.06 143.9)
-
Step 700
700
#4D694D
oklch(49% 0.055 144.7)
-
Step 800
800
#3F563F
oklch(42.7% 0.047 144.7)
-
Step 900
900
#364736
oklch(37.8% 0.036 144.8)
-
Step 950
950 (this color)
#040B04
oklch(13.8% 0.023 144.2)
#040B04 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #0B0A04 | 0.017 |
| Deuteranopia (no green cones) | #0A0904 | 0.016 |
| Tritanopia (no blue cones) | #030B09 | 0.014 |
| Achromatopsia (no color) | #090909 | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #040B04
#040B04
oklch(13.8% 0.023 144.2)
- #0D060E
#0D060E
oklch(13.8% 0.022 322.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #040B04, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.024
- Rich Navy #001219 ΔE 0.047
- Very Dark Brown #1D0200 ΔE 0.067
- Rich Black #0D1B2A ΔE 0.093
- Dark Navy Blue #00022E ΔE 0.103
- Midnight #03012D ΔE 0.103
- Dark Navy #000435 ΔE 0.111
- Very Dark Blue #000133 ΔE 0.112
Use #040B04 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.