#040C15
Closest named color: Almost Black (#070D0D). oklch(15% 0.024 248.2), rgb(4, 12, 21).
Aa
White text reads best on this color (19.65:1).
About this color
#040C15 is a very dark close to neutral grey. In OKLCH its lightness is 15%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Almost Black (#070D0D), ΔE 0.020 away. White text reads best on it, at 19.65:1.
| Hue family | Neutrals |
| Lightness | very dark (15%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.06:1 |
| White text | 19.65:1 |
Values
| HEX | #040C15 |
| RGB | rgb(4, 12, 21) |
| HSL | hsl(212, 68%, 5%) |
| OKLCH | oklch(15% 0.024 248.2) |
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 #040C15 | 19.65:1 | AAA | Lc -107.7 | Preferred for body text |
| Black text on #040C15 | 1.06:1 | Fails | Lc 0.0 | Not readable |
| #040C15 text on white | 19.65:1 | AAA | Lc 105.7 | Preferred for body text |
| #040C15 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D1DAE3
oklch(88.4% 0.016 248)
-
Step 300
300
#B3C3D3
oklch(81% 0.029 248.2)
-
Step 400
400
#8BA4BD
oklch(70.8% 0.046 248.5)
-
Step 500
500
#6D8DAC
oklch(63.1% 0.059 248)
-
Step 600
600
#557797
oklch(55.6% 0.063 247.5)
-
Step 700
700
#456481
oklch(49.1% 0.059 247.5)
-
Step 800
800
#395169
oklch(42.6% 0.05 249.1)
-
Step 900
900
#314455
oklch(37.8% 0.038 246)
-
Step 950
950 (this color)
#040C15
oklch(15% 0.024 248.2)
#040C15 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) | #080C15 | 0.009 |
| Deuteranopia (no green cones) | #060A15 | 0.009 |
| Tritanopia (no blue cones) | #000E0F | 0.020 |
| Achromatopsia (no color) | #0B0B0B | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #040C15
#040C15
oklch(15% 0.024 248.2)
- #120902
#120902
oklch(15% 0.025 68.4)
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 #040C15, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.020
- Rich Navy #001219 ΔE 0.023
- Midnight #03012D ΔE 0.067
- Dark Navy Blue #00022E ΔE 0.067
- Rich Black #0D1B2A ΔE 0.068
- Dark Navy #000435 ΔE 0.073
- Very Dark Brown #1D0200 ΔE 0.075
- Very Dark Blue #000133 ΔE 0.075
Use #040C15 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.