#181F01
Closest named color: Dark Forest Green (#002D04). oklch(22.4% 0.052 121.2), rgb(24, 31, 1).
Aa
White text reads best on this color (17.00:1).
About this color
#181F01 is a very dark, muted brown. In OKLCH its lightness is 22%, its chroma 0.052 and its hue 121°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Forest Green (#002D04), ΔE 0.053 away. White text reads best on it, at 17.00:1.
| Hue family | Browns |
| Lightness | very dark (22%) |
| Chroma | muted (0.052) |
| Temperature | in between |
| Nearest name | Dark Forest Green (#002D04) |
| Black text | 1.23:1 |
| White text | 17.00:1 |
Values
| HEX | #181F01 |
| RGB | rgb(24, 31, 1) |
| HSL | hsl(74, 94%, 6%) |
| OKLCH | oklch(22.4% 0.052 121.2) |
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 #181F01 | 17.00:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #181F01 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #181F01 text on white | 17.00:1 | AAA | Lc 103.8 | Preferred for body text |
| #181F01 text on black | 1.23:1 | 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
#F4F6F0
oklch(97% 0.008 121.6)
-
Step 100
100
#E8ECDF
oklch(93.6% 0.018 120.7)
-
Step 200
200
#D5DDC4
oklch(88.5% 0.035 121.6)
-
Step 300
300
#BAC79B
oklch(80.8% 0.061 121.1)
-
Step 400
400
#97AA63
oklch(70.6% 0.098 121.2)
-
Step 500
500
#7E9533
oklch(63.2% 0.126 121.4)
-
Step 600
600
#687E00
oklch(55.5% 0.133 121.1)
-
Step 700
700
#576A00
oklch(49.1% 0.118 121.1)
-
Step 800
800
#475700
oklch(42.8% 0.103 121.1)
-
Step 900
900
#3B480C
oklch(37.7% 0.083 121.4)
-
Step 950
950 (this color)
#181F01
oklch(22.4% 0.052 121.2)
#181F01 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) | #221C00 | 0.021 |
| Deuteranopia (no green cones) | #211C03 | 0.021 |
| Tritanopia (no blue cones) | #1A1D19 | 0.044 |
| Achromatopsia (no color) | #1C1C1C | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #181F01
#181F01
oklch(22.4% 0.052 121.2)
- #201530
#201530
oklch(22.5% 0.052 301.1)
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 #181F01, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Forest Green #002D04 ΔE 0.053
- Very Dark Green #062E03 ΔE 0.055
- Dark Brown #341C02 ΔE 0.058
- Jet #212529 ΔE 0.069
- Rich Black #0D1B2A ΔE 0.080
- Dark #1B2431 ΔE 0.082
- Rich Navy #001219 ΔE 0.086
- Chocolate Brown #411900 ΔE 0.087
Use #181F01 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.