#0A1909
Closest named color: Rich Navy (#001219). oklch(19.5% 0.037 142.6), rgb(10, 25, 9).
Aa
White text reads best on this color (18.16:1).
About this color
#0A1909 is a very dark, muted green. In OKLCH its lightness is 19%, its chroma 0.037 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.051 away. White text reads best on it, at 18.16:1.
| Hue family | Greens |
| Lightness | very dark (19%) |
| Chroma | muted (0.037) |
| Temperature | in between |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.15:1 |
| White text | 18.16:1 |
Values
| HEX | #0A1909 |
| RGB | rgb(10, 25, 9) |
| HSL | hsl(116, 47%, 7%) |
| OKLCH | oklch(19.5% 0.037 142.6) |
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 #0A1909 | 18.16:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #0A1909 | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #0A1909 text on white | 18.16:1 | AAA | Lc 104.8 | Preferred for body text |
| #0A1909 text on black | 1.15:1 | 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
#F3F6F3
oklch(97% 0.005 145.5)
-
Step 100
100
#E5ECE4
oklch(93.6% 0.013 141.8)
-
Step 200
200
#D0DECF
oklch(88.6% 0.025 143.5)
-
Step 300
300
#B1C8AE
oklch(80.8% 0.044 142)
-
Step 400
400
#87AC84
oklch(70.6% 0.07 142.9)
-
Step 500
500
#689865
oklch(63.2% 0.091 143)
-
Step 600
600
#4F824B
oklch(55.6% 0.099 142.5)
-
Step 700
700
#406E3C
oklch(49.2% 0.092 142.3)
-
Step 800
800
#355932
oklch(42.6% 0.075 142.4)
-
Step 900
900
#2E4A2C
oklch(37.8% 0.06 142.8)
-
Step 950
950 (this color)
#0A1909
oklch(19.5% 0.037 142.6)
#0A1909 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) | #1A1608 | 0.029 |
| Deuteranopia (no green cones) | #18150A | 0.028 |
| Tritanopia (no blue cones) | #081815 | 0.024 |
| Achromatopsia (no color) | #161616 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A1909
#0A1909
oklch(19.5% 0.037 142.6)
- #1D0F1F
#1D0F1F
oklch(19.6% 0.038 322.4)
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 #0A1909, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.051
- Almost Black #070D0D ΔE 0.053
- Rich Black #0D1B2A ΔE 0.064
- Dark Forest Green #002D04 ΔE 0.078
- Jet #212529 ΔE 0.079
- Very Dark Green #062E03 ΔE 0.082
- Dark Brown #341C02 ΔE 0.084
- Dark #1B2431 ΔE 0.084
Use #0A1909 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.