#040D09
Closest named color: Almost Black (#070D0D). oklch(14.7% 0.018 167.5), rgb(4, 13, 9).
Aa
White text reads best on this color (19.68:1).
About this color
#040D09 is a very dark close to neutral grey. In OKLCH its lightness is 15%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Almost Black (#070D0D), ΔE 0.012 away. White text reads best on it, at 19.68:1.
| Hue family | Neutrals |
| Lightness | very dark (15%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.06:1 |
| White text | 19.68:1 |
Values
| HEX | #040D09 |
| RGB | rgb(4, 13, 9) |
| HSL | hsl(153, 53%, 3%) |
| OKLCH | oklch(14.7% 0.018 167.5) |
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 #040D09 | 19.68:1 | AAA | Lc -107.7 | Preferred for body text |
| Black text on #040D09 | 1.06:1 | Fails | Lc 0.0 | Not readable |
| #040D09 text on white | 19.68:1 | AAA | Lc 105.8 | Preferred for body text |
| #040D09 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D2DCD7
oklch(88.5% 0.013 164.8)
-
Step 300
300
#B4C5BE
oklch(80.8% 0.021 169.2)
-
Step 400
400
#8DA89C
oklch(70.7% 0.035 166.7)
-
Step 500
500
#709284
oklch(63% 0.043 167.8)
-
Step 600
600
#587D6E
oklch(55.7% 0.048 167.6)
-
Step 700
700
#48695C
oklch(49.1% 0.044 168.1)
-
Step 800
800
#3B564B
oklch(42.8% 0.037 167.4)
-
Step 900
900
#33473E
oklch(37.8% 0.03 165.4)
-
Step 950
950 (this color)
#040D09
oklch(14.7% 0.018 167.5)
#040D09 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) | #0D0C09 | 0.019 |
| Deuteranopia (no green cones) | #0B0A09 | 0.019 |
| Tritanopia (no blue cones) | #020D0C | 0.007 |
| Achromatopsia (no color) | #0B0B0B | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #040D09
#040D09
oklch(14.7% 0.018 167.5)
- #10080C
#10080C
oklch(14.8% 0.017 347.4)
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 #040D09, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.012
- Rich Navy #001219 ΔE 0.034
- Very Dark Brown #1D0200 ΔE 0.068
- Rich Black #0D1B2A ΔE 0.080
- Dark Navy Blue #00022E ΔE 0.094
- Midnight #03012D ΔE 0.094
- Dark Navy #000435 ΔE 0.100
- Very Dark Blue #000133 ΔE 0.102
Use #040D09 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.