#040B00
Closest named color: Almost Black (#070D0D). oklch(13.6% 0.037 131.2), rgb(4, 11, 0).
Aa
White text reads best on this color (19.94:1).
About this color
#040B00 is a very dark, muted green. In OKLCH its lightness is 14%, its chroma 0.037 and its hue 131°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Almost Black (#070D0D), ΔE 0.038 away. White text reads best on it, at 19.94:1.
| Hue family | Greens |
| Lightness | very dark (14%) |
| Chroma | muted (0.037) |
| Temperature | in between |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.05:1 |
| White text | 19.94:1 |
Values
| HEX | #040B00 |
| RGB | rgb(4, 11, 0) |
| HSL | hsl(98, 100%, 2%) |
| OKLCH | oklch(13.6% 0.037 131.2) |
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 #040B00 | 19.94:1 | AAA | Lc -107.8 | Preferred for body text |
| Black text on #040B00 | 1.05:1 | Fails | Lc 0.0 | Not readable |
| #040B00 text on white | 19.94:1 | AAA | Lc 105.9 | Preferred for body text |
| #040B00 text on black | 1.05:1 | 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
#F4F6F2
oklch(97.1% 0.006 128.5)
-
Step 100
100
#E7ECE3
oklch(93.7% 0.013 130.8)
-
Step 200
200
#D3DDCC
oklch(88.5% 0.025 132.1)
-
Step 300
300
#B7C7AA
oklch(81% 0.044 131)
-
Step 400
400
#91AA7C
oklch(70.7% 0.07 131.2)
-
Step 500
500
#76955A
oklch(63.1% 0.091 131.1)
-
Step 600
600
#5F7F40
oklch(55.6% 0.097 131.1)
-
Step 700
700
#4E6B31
oklch(49.1% 0.091 131)
-
Step 800
800
#40572A
oklch(42.6% 0.074 131.2)
-
Step 900
900
#364826
oklch(37.7% 0.059 131.5)
-
Step 950
950 (this color)
#040B00
oklch(13.6% 0.037 131.2)
#040B00 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) | #0C0900 | 0.020 |
| Deuteranopia (no green cones) | #0B0900 | 0.018 |
| Tritanopia (no blue cones) | #040A08 | 0.029 |
| Achromatopsia (no color) | #090909 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #040B00
#040B00
oklch(13.6% 0.037 131.2)
- #0D0413
#0D0413
oklch(13.4% 0.038 311.8)
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 #040B00, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.038
- Rich Navy #001219 ΔE 0.060
- Very Dark Brown #1D0200 ΔE 0.071
- Rich Black #0D1B2A ΔE 0.104
- Dark Navy Blue #00022E ΔE 0.118
- Midnight #03012D ΔE 0.119
- Dark Navy #000435 ΔE 0.126
- Very Dark Blue #000133 ΔE 0.127
Use #040B00 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.