#0A040B
Closest named color: Almost Black (#070D0D). oklch(12.3% 0.023 322.7), rgb(10, 4, 11).
Aa
White text reads best on this color (20.28:1).
About this color
#0A040B is a very dark close to neutral grey. In OKLCH its lightness is 12%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Almost Black (#070D0D), ΔE 0.042 away. White text reads best on it, at 20.28:1.
| Hue family | Neutrals |
| Lightness | very dark (12%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.03:1 |
| White text | 20.28:1 |
Values
| HEX | #0A040B |
| RGB | rgb(10, 4, 11) |
| HSL | hsl(291, 47%, 3%) |
| OKLCH | oklch(12.3% 0.023 322.7) |
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 #0A040B | 20.28:1 | AAA | Lc -107.8 | Preferred for body text |
| Black text on #0A040B | 1.03:1 | Fails | Lc 0.0 | Not readable |
| #0A040B text on white | 20.28:1 | AAA | Lc 106.0 | Preferred for body text |
| #0A040B text on black | 1.03:1 | 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
#F7F5F7
oklch(97.2% 0.003 325.6)
-
Step 100
100
#ECE8ED
oklch(93.6% 0.008 319.4)
-
Step 200
200
#DED6DF
oklch(88.5% 0.015 322.3)
-
Step 300
300
#C9BBCB
oklch(80.8% 0.027 322)
-
Step 400
400
#AE98B1
oklch(70.7% 0.044 322.2)
-
Step 500
500
#9A7F9D
oklch(63.2% 0.054 323)
-
Step 600
600
#856888
oklch(55.7% 0.06 323.2)
-
Step 700
700
#705673
oklch(49% 0.055 322.9)
-
Step 800
800
#5B475E
oklch(42.8% 0.045 322)
-
Step 900
900
#4B3B4D
oklch(37.6% 0.037 322.6)
-
Step 950
950 (this color)
#0A040B
oklch(12.3% 0.023 322.7)
#0A040B 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) | #03050B | 0.022 |
| Deuteranopia (no green cones) | #05060B | 0.017 |
| Tritanopia (no blue cones) | #0A0506 | 0.016 |
| Achromatopsia (no color) | #060606 | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A040B
#0A040B
oklch(12.3% 0.023 322.7)
- #030802
#030802
oklch(12.3% 0.024 138.7)
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 #0A040B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.042
- Very Dark Brown #1D0200 ΔE 0.059
- Rich Navy #001219 ΔE 0.062
- Midnight #03012D ΔE 0.078
- Dark Navy Blue #00022E ΔE 0.083
- Very Dark Blue #000133 ΔE 0.092
- Dark Navy #000435 ΔE 0.093
- Rich Black #0D1B2A ΔE 0.101
Use #0A040B 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.