#001B04
Closest named color: Rich Navy (#001219). oklch(19.3% 0.058 146.7), rgb(0, 27, 4).
Aa
White text reads best on this color (18.12:1).
About this color
#001B04 is a very dark, muted green. In OKLCH its lightness is 19%, its chroma 0.058 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.064 away. White text reads best on it, at 18.12:1.
| Hue family | Greens |
| Lightness | very dark (19%) |
| Chroma | muted (0.058) |
| Temperature | in between |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.15:1 |
| White text | 18.12:1 |
Values
| HEX | #001B04 |
| RGB | rgb(0, 27, 4) |
| HSL | hsl(129, 100%, 5%) |
| OKLCH | oklch(19.3% 0.058 146.7) |
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 #001B04 | 18.12:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #001B04 | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #001B04 text on white | 18.12:1 | AAA | Lc 104.6 | Preferred for body text |
| #001B04 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
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E2EEE2
oklch(93.7% 0.02 145.4)
-
Step 200
200
#CAE0CB
oklch(88.5% 0.037 146.5)
-
Step 300
300
#A4CDA7
oklch(80.9% 0.068 146.8)
-
Step 400
400
#71B378
oklch(70.7% 0.109 146.8)
-
Step 500
500
#46A054
oklch(63.2% 0.141 146.8)
-
Step 600
600
#1F8A37
oklch(55.7% 0.153 146.6)
-
Step 700
700
#0D752A
oklch(49.2% 0.142 146.8)
-
Step 800
800
#125F24
oklch(42.7% 0.117 146.8)
-
Step 900
900
#194E22
oklch(37.7% 0.091 146.6)
-
Step 950
950 (this color)
#001B04
oklch(19.3% 0.058 146.7)
#001B04 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) | #1C1702 | 0.046 |
| Deuteranopia (no green cones) | #181505 | 0.044 |
| Tritanopia (no blue cones) | #001A16 | 0.035 |
| Achromatopsia (no color) | #161616 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #001B04
#001B04
oklch(19.3% 0.058 146.7)
- #210922
#210922
oklch(19.2% 0.058 326)
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 #001B04, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.064
- Almost Black #070D0D ΔE 0.066
- Dark Forest Green #002D04 ΔE 0.069
- Very Dark Green #062E03 ΔE 0.075
- Rich Black #0D1B2A ΔE 0.079
- Jet #212529 ΔE 0.092
- Dark Brown #341C02 ΔE 0.095
- Dark #1B2431 ΔE 0.097
Use #001B04 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.