#04050B
Closest named color: Almost Black (#070D0D). oklch(11.7% 0.016 273.8), rgb(4, 5, 11).
Aa
White text reads best on this color (20.35:1).
About this color
#04050B is a very dark close to neutral grey. In OKLCH its lightness is 12%, its chroma 0.016. It has too little chroma to lean warm or cool. The nearest named color is Almost Black (#070D0D), ΔE 0.039 away. White text reads best on it, at 20.35:1.
| Hue family | Neutrals |
| Lightness | very dark (12%) |
| Chroma | close to neutral grey (0.016) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.03:1 |
| White text | 20.35:1 |
Values
| HEX | #04050B |
| RGB | rgb(4, 5, 11) |
| HSL | hsl(231, 47%, 3%) |
| OKLCH | oklch(11.7% 0.016 273.8) |
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 #04050B | 20.35:1 | AAA | Lc -107.8 | Preferred for body text |
| Black text on #04050B | 1.03:1 | Fails | Lc 0.0 | Not readable |
| #04050B text on white | 20.35:1 | AAA | Lc 106.0 | Preferred for body text |
| #04050B 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D7D9E0
oklch(88.6% 0.01 273.3)
-
Step 300
300
#BCC0CE
oklch(80.9% 0.02 273.2)
-
Step 400
400
#9AA0B5
oklch(70.8% 0.031 272.9)
-
Step 500
500
#8288A2
oklch(63.1% 0.04 275)
-
Step 600
600
#6B728D
oklch(55.6% 0.043 273.6)
-
Step 700
700
#595F78
oklch(49% 0.041 274.3)
-
Step 800
800
#494E62
oklch(42.7% 0.034 273.9)
-
Step 900
900
#3D4150
oklch(37.8% 0.026 273.4)
-
Step 950
950 (this color)
#04050B
oklch(11.7% 0.016 273.8)
#04050B 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) | #04050B | 0.000 |
| Deuteranopia (no green cones) | #03050B | 0.004 |
| Tritanopia (no blue cones) | #030607 | 0.014 |
| Achromatopsia (no color) | #050505 | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04050B
#04050B
oklch(11.7% 0.016 273.8)
- #070501
#070501
oklch(11.6% 0.018 92.3)
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 #04050B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.039
- Rich Navy #001219 ΔE 0.057
- Very Dark Brown #1D0200 ΔE 0.072
- Midnight #03012D ΔE 0.076
- Dark Navy Blue #00022E ΔE 0.078
- Very Dark Blue #000133 ΔE 0.088
- Dark Navy #000435 ΔE 0.090
- Rich Black #0D1B2A ΔE 0.103
Use #04050B 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.