#181C04
Closest named color: Dark Brown (#341C02). oklch(21.6% 0.042 117.7), rgb(24, 28, 4).
Aa
White text reads best on this color (17.40:1).
About this color
#181C04 is a very dark, muted brown. In OKLCH its lightness is 22%, its chroma 0.042 and its hue 118°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Brown (#341C02), ΔE 0.058 away. White text reads best on it, at 17.40:1.
| Hue family | Browns |
| Lightness | very dark (22%) |
| Chroma | muted (0.042) |
| Temperature | in between |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.20:1 |
| White text | 17.40:1 |
Values
| HEX | #181C04 |
| RGB | rgb(24, 28, 4) |
| HSL | hsl(70, 75%, 6%) |
| OKLCH | oklch(21.6% 0.042 117.7) |
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 #181C04 | 17.40:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #181C04 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #181C04 text on white | 17.40:1 | AAA | Lc 104.2 | Preferred for body text |
| #181C04 text on black | 1.20:1 | 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
#F5F6F1
oklch(97.1% 0.007 115.7)
-
Step 100
100
#E9EBE1
oklch(93.6% 0.013 115.8)
-
Step 200
200
#D7DCC8
oklch(88.5% 0.027 118.4)
-
Step 300
300
#BDC5A1
oklch(80.8% 0.05 117.7)
-
Step 400
400
#9CA86E
oklch(70.8% 0.08 118)
-
Step 500
500
#849246
oklch(63.2% 0.102 118.1)
-
Step 600
600
#6E7B25
oklch(55.5% 0.11 117.6)
-
Step 700
700
#5C6817
oklch(49.1% 0.103 117.8)
-
Step 800
800
#4B5516
oklch(42.7% 0.086 118)
-
Step 900
900
#3F461A
oklch(37.7% 0.066 117.2)
-
Step 950
950 (this color)
#181C04
oklch(21.6% 0.042 117.7)
#181C04 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) | #1F1A02 | 0.014 |
| Deuteranopia (no green cones) | #1E1A05 | 0.014 |
| Tritanopia (no blue cones) | #1A1A17 | 0.036 |
| Achromatopsia (no color) | #1A1A1A | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #181C04
#181C04
oklch(21.6% 0.042 117.7)
- #1C152A
#1C152A
oklch(21.6% 0.041 298.2)
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 #181C04, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.058
- Dark Forest Green #002D04 ΔE 0.065
- Very Dark Green #062E03 ΔE 0.067
- Jet #212529 ΔE 0.067
- Rich Black #0D1B2A ΔE 0.071
- Rich Navy #001219 ΔE 0.075
- Almost Black #070D0D ΔE 0.075
- Dark #1B2431 ΔE 0.078
Use #181C04 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.