#040000
Closest named color: Black (#000000). oklch(6.7% 0.027 29.2), rgb(4, 0, 0).
Aa
White text reads best on this color (20.89:1).
About this color
#040000 is a very dark close to neutral grey. In OKLCH its lightness is 7%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Black (#000000), ΔE 0.072 away. White text reads best on it, at 20.89:1.
| Hue family | Neutrals |
| Lightness | very dark (7%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Black (#000000) |
| Black text | 1.00:1 |
| White text | 20.89:1 |
Values
| HEX | #040000 |
| RGB | rgb(4, 0, 0) |
| HSL | hsl(0, 100%, 1%) |
| OKLCH | oklch(6.7% 0.027 29.2) |
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 #040000 | 20.89:1 | AAA | Lc -107.9 | Preferred for body text |
| Black text on #040000 | 1.00:1 | Fails | Lc 0.0 | Not readable |
| #040000 text on white | 20.89:1 | AAA | Lc 106.0 | Preferred for body text |
| #040000 text on black | 1.00:1 | 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
#F8F4F4
oklch(97% 0.004 17.2)
-
Step 100
100
#F0E8E6
oklch(93.7% 0.009 34.3)
-
Step 200
200
#E5D5D2
oklch(88.5% 0.018 30.3)
-
Step 300
300
#D5B9B5
oklch(80.9% 0.033 27.5)
-
Step 400
400
#BF958E
oklch(70.7% 0.052 29.3)
-
Step 500
500
#AE7A72
oklch(63% 0.067 28.8)
-
Step 600
600
#99635B
oklch(55.6% 0.072 28.8)
-
Step 700
700
#83524A
oklch(49.2% 0.068 29.8)
-
Step 800
800
#6A433D
oklch(42.6% 0.056 29.1)
-
Step 900
900
#563934
oklch(37.7% 0.043 30)
-
Step 950
950 (this color)
#040000
oklch(6.7% 0.027 29.2)
#040000 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) | #010000 | 0.027 |
| Deuteranopia (no green cones) | #010100 | 0.029 |
| Tritanopia (no blue cones) | #050000 | 0.006 |
| Achromatopsia (no color) | #010101 | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #040000
#040000
oklch(6.7% 0.027 29.2)
- #000102
#000102
oklch(6.3% 0.013 233.5)
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 #040000, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Black #000000 ΔE 0.072
- Very Dark Brown #1D0200 ΔE 0.088
- Almost Black #070D0D ΔE 0.093
- Rich Navy #001219 ΔE 0.118
- Midnight #03012D ΔE 0.128
- Dark Navy Blue #00022E ΔE 0.132
- Very Dark Blue #000133 ΔE 0.142
- Dark Navy #000435 ΔE 0.147
Use #040000 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.