#040B10
Closest named color: Almost Black (#070D0D). oklch(14.4% 0.017 235.2), rgb(4, 11, 16).
Aa
White text reads best on this color (19.80:1).
About this color
#040B10 is a very dark close to neutral grey. In OKLCH its lightness is 14%, its chroma 0.017. It has too little chroma to lean warm or cool. The nearest named color is Almost Black (#070D0D), ΔE 0.014 away. White text reads best on it, at 19.80:1.
| Hue family | Neutrals |
| Lightness | very dark (14%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.06:1 |
| White text | 19.80:1 |
Values
| HEX | #040B10 |
| RGB | rgb(4, 11, 16) |
| HSL | hsl(205, 60%, 4%) |
| OKLCH | oklch(14.4% 0.017 235.2) |
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 #040B10 | 19.80:1 | AAA | Lc -107.7 | Preferred for body text |
| Black text on #040B10 | 1.06:1 | Fails | Lc 0.0 | Not readable |
| #040B10 text on white | 19.80:1 | AAA | Lc 105.8 | Preferred for body text |
| #040B10 text on black | 1.06:1 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EAED
oklch(93.5% 0.006 239.8)
-
Step 200
200
#D2DAE0
oklch(88.4% 0.012 239.9)
-
Step 300
300
#B5C3CC
oklch(80.9% 0.02 235.8)
-
Step 400
400
#8EA4B2
oklch(70.6% 0.032 235.9)
-
Step 500
500
#728E9F
oklch(63.1% 0.041 234.9)
-
Step 600
600
#5A788A
oklch(55.6% 0.044 235)
-
Step 700
700
#496575
oklch(49.1% 0.042 233.8)
-
Step 800
800
#3C5260
oklch(42.6% 0.036 236.6)
-
Step 900
900
#34444E
oklch(37.7% 0.027 235.9)
-
Step 950
950 (this color)
#040B10
oklch(14.4% 0.017 235.2)
#040B10 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) | #090B10 | 0.011 |
| Deuteranopia (no green cones) | #070910 | 0.010 |
| Tritanopia (no blue cones) | #010C0D | 0.012 |
| Achromatopsia (no color) | #0A0A0A | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #040B10
#040B10
oklch(14.4% 0.017 235.2)
- #0F0804
#0F0804
oklch(14.3% 0.017 58.5)
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 #040B10, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.014
- Rich Navy #001219 ΔE 0.029
- Very Dark Brown #1D0200 ΔE 0.071
- Midnight #03012D ΔE 0.075
- Dark Navy Blue #00022E ΔE 0.075
- Rich Black #0D1B2A ΔE 0.077
- Dark Navy #000435 ΔE 0.083
- Very Dark Blue #000133 ΔE 0.084
Use #040B10 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.