#040C10
Closest named color: Almost Black (#070D0D). oklch(14.7% 0.017 226.7), rgb(4, 12, 16).
Aa
White text reads best on this color (19.71:1).
About this color
#040C10 is a very dark close to neutral grey. In OKLCH its lightness is 15%, its chroma 0.017. It has too little chroma to lean warm or cool. The nearest named color is Almost Black (#070D0D), ΔE 0.011 away. White text reads best on it, at 19.71:1.
| Hue family | Neutrals |
| Lightness | very dark (15%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.06:1 |
| White text | 19.71:1 |
Values
| HEX | #040C10 |
| RGB | rgb(4, 12, 16) |
| HSL | hsl(200, 60%, 4%) |
| OKLCH | oklch(14.7% 0.017 226.7) |
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 #040C10 | 19.71:1 | AAA | Lc -107.7 | Preferred for body text |
| Black text on #040C10 | 1.06:1 | Fails | Lc 0.0 | Not readable |
| #040C10 text on white | 19.71:1 | AAA | Lc 105.8 | Preferred for body text |
| #040C10 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
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D2DBDF
oklch(88.6% 0.011 226)
-
Step 300
300
#B4C4CB
oklch(81% 0.02 225.8)
-
Step 400
400
#8CA5B0
oklch(70.6% 0.032 226.2)
-
Step 500
500
#708F9D
oklch(63.1% 0.041 227.2)
-
Step 600
600
#587988
oklch(55.7% 0.044 227.8)
-
Step 700
700
#476673
oklch(49.1% 0.042 225.9)
-
Step 800
800
#3B535E
oklch(42.7% 0.034 228)
-
Step 900
900
#33454D
oklch(37.8% 0.027 227)
-
Step 950
950 (this color)
#040C10
oklch(14.7% 0.017 226.7)
#040C10 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) | #0A0C10 | 0.013 |
| Deuteranopia (no green cones) | #080A10 | 0.012 |
| Tritanopia (no blue cones) | #010D0D | 0.012 |
| Achromatopsia (no color) | #0B0B0B | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #040C10
#040C10
oklch(14.7% 0.017 226.7)
- #100805
#100805
oklch(14.5% 0.017 46.5)
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 #040C10, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.011
- Rich Navy #001219 ΔE 0.026
- Very Dark Brown #1D0200 ΔE 0.071
- Rich Black #0D1B2A ΔE 0.074
- Midnight #03012D ΔE 0.077
- Dark Navy Blue #00022E ΔE 0.077
- Dark Navy #000435 ΔE 0.084
- Very Dark Blue #000133 ΔE 0.086
Use #040C10 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.