#001B01
Closest named color: Dark Forest Green (#002D04). oklch(19.3% 0.063 143.5), rgb(0, 27, 1).
Aa
White text reads best on this color (18.14:1).
About this color
#001B01 is a very dark, muted green. In OKLCH its lightness is 19%, its chroma 0.063 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Forest Green (#002D04), ΔE 0.068 away. White text reads best on it, at 18.14:1.
| Hue family | Greens |
| Lightness | very dark (19%) |
| Chroma | muted (0.063) |
| Temperature | in between |
| Nearest name | Dark Forest Green (#002D04) |
| Black text | 1.15:1 |
| White text | 18.14:1 |
Values
| HEX | #001B01 |
| RGB | rgb(0, 27, 1) |
| HSL | hsl(122, 100%, 5%) |
| OKLCH | oklch(19.3% 0.063 143.5) |
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 #001B01 | 18.14:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #001B01 | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #001B01 text on white | 18.14:1 | AAA | Lc 104.6 | Preferred for body text |
| #001B01 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
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E2EEE1
oklch(93.7% 0.021 143.2)
-
Step 200
200
#C9E1C8
oklch(88.5% 0.042 144.1)
-
Step 300
300
#A4CEA2
oklch(81% 0.075 143.7)
-
Step 400
400
#71B46F
oklch(70.8% 0.12 143.6)
-
Step 500
500
#46A046
oklch(63% 0.154 143.5)
-
Step 600
600
#208A25
oklch(55.5% 0.166 143.5)
-
Step 700
700
#0E7517
oklch(49% 0.155 143.5)
-
Step 800
800
#126016
oklch(42.8% 0.129 143.5)
-
Step 900
900
#194E1A
oklch(37.6% 0.099 143.6)
-
Step 950
950 (this color)
#001B01
oklch(19.3% 0.063 143.5)
#001B01 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) | #1C1700 | 0.046 |
| Deuteranopia (no green cones) | #181503 | 0.045 |
| Tritanopia (no blue cones) | #001A15 | 0.040 |
| Achromatopsia (no color) | #161616 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #001B01
#001B01
oklch(19.3% 0.063 143.5)
- #210824
#210824
oklch(19.2% 0.063 323.3)
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 #001B01, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Forest Green #002D04 ΔE 0.068
- Rich Navy #001219 ΔE 0.069
- Almost Black #070D0D ΔE 0.071
- Very Dark Green #062E03 ΔE 0.073
- Rich Black #0D1B2A ΔE 0.085
- Jet #212529 ΔE 0.096
- Dark Brown #341C02 ΔE 0.097
- Dark #1B2431 ΔE 0.102
Use #001B01 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.