#181B0B
Closest named color: Dark Brown (#341C02). oklch(21.4% 0.029 117.6), rgb(24, 27, 11).
Aa
White text reads best on this color (17.49:1).
About this color
#181B0B is a very dark close to neutral grey. In OKLCH its lightness is 21%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Dark Brown (#341C02), ΔE 0.059 away. White text reads best on it, at 17.49:1.
| Hue family | Neutrals |
| Lightness | very dark (21%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.20:1 |
| White text | 17.49:1 |
Values
| HEX | #181B0B |
| RGB | rgb(24, 27, 11) |
| HSL | hsl(71, 42%, 7%) |
| OKLCH | oklch(21.4% 0.029 117.6) |
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 #181B0B | 17.49:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #181B0B | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #181B0B text on white | 17.49:1 | AAA | Lc 104.3 | Preferred for body text |
| #181B0B 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
#F5F6F2
oklch(97.1% 0.005 117.9)
-
Step 100
100
#E9EBE3
oklch(93.6% 0.011 118)
-
Step 200
200
#D8DBCD
oklch(88.5% 0.019 116.6)
-
Step 300
300
#BEC4AB
oklch(80.9% 0.035 118.2)
-
Step 400
400
#9DA67F
oklch(70.8% 0.055 118.4)
-
Step 500
500
#868F5E
oklch(63% 0.07 116.9)
-
Step 600
600
#6F7944
oklch(55.5% 0.076 117.7)
-
Step 700
700
#5D6635
oklch(49% 0.072 117.7)
-
Step 800
800
#4C532D
oklch(42.6% 0.058 117.5)
-
Step 900
900
#3F4528
oklch(37.7% 0.047 118.2)
-
Step 950
950 (this color)
#181B0B
oklch(21.4% 0.029 117.6)
#181B0B 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) | #1D190A | 0.011 |
| Deuteranopia (no green cones) | #1D1A0C | 0.011 |
| Tritanopia (no blue cones) | #1A1917 | 0.026 |
| Achromatopsia (no color) | #191919 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #181B0B
#181B0B
oklch(21.4% 0.029 117.6)
- #1B1625
#1B1625
oklch(21.4% 0.03 299.2)
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 #181B0B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.059
- Rich Black #0D1B2A ΔE 0.060
- Jet #212529 ΔE 0.060
- Rich Navy #001219 ΔE 0.066
- Almost Black #070D0D ΔE 0.068
- Dark #1B2431 ΔE 0.069
- Dark Forest Green #002D04 ΔE 0.073
- Very Dark Green #062E03 ΔE 0.076
Use #181B0B 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.