#181F17
Closest named color: Jet (#212529). oklch(22.9% 0.018 141.6), rgb(24, 31, 23).
Aa
White text reads best on this color (16.83:1).
About this color
#181F17 is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.040 away. White text reads best on it, at 16.83:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.24:1 |
| White text | 16.83:1 |
Values
| HEX | #181F17 |
| RGB | rgb(24, 31, 23) |
| HSL | hsl(113, 15%, 11%) |
| OKLCH | oklch(22.9% 0.018 141.6) |
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 #181F17 | 16.83:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #181F17 | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #181F17 text on white | 16.83:1 | AAA | Lc 103.8 | Preferred for body text |
| #181F17 text on black | 1.24:1 | 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
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E8EBE7
oklch(93.7% 0.006 137.8)
-
Step 200
200
#D5DBD4
oklch(88.5% 0.011 141.3)
-
Step 300
300
#B9C4B7
oklch(80.8% 0.022 140.9)
-
Step 400
400
#95A692
oklch(70.6% 0.034 141)
-
Step 500
500
#7B9178
oklch(63.2% 0.045 141.8)
-
Step 600
600
#647B60
oklch(55.7% 0.049 140.9)
-
Step 700
700
#536750
oklch(49% 0.043 141.4)
-
Step 800
800
#445441
oklch(42.6% 0.037 140.7)
-
Step 900
900
#394637
oklch(37.8% 0.03 141.4)
-
Step 950
950 (this color)
#181F17
oklch(22.9% 0.018 141.6)
#181F17 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) | #1F1E17 | 0.013 |
| Deuteranopia (no green cones) | #1E1D17 | 0.013 |
| Tritanopia (no blue cones) | #181E1D | 0.013 |
| Achromatopsia (no color) | #1D1D1D | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #181F17
#181F17
oklch(22.9% 0.018 141.6)
- #211A22
#211A22
oklch(23% 0.018 322.1)
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 #181F17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.040
- Rich Black #0D1B2A ΔE 0.047
- Dark #1B2431 ΔE 0.049
- Dark Brown #341C02 ΔE 0.058
- Oxford Blue #1B263B ΔE 0.067
- Rich Navy #001219 ΔE 0.069
- Dark Forest Green #002D04 ΔE 0.071
- Very Dark Green #062E03 ΔE 0.073
Use #181F17 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.