#171F16
Closest named color: Jet (#212529). oklch(22.8% 0.021 142), rgb(23, 31, 22).
Aa
White text reads best on this color (16.88:1).
About this color
#171F16 is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.042 away. White text reads best on it, at 16.88:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.24:1 |
| White text | 16.88:1 |
Values
| HEX | #171F16 |
| RGB | rgb(23, 31, 22) |
| HSL | hsl(113, 17%, 10%) |
| OKLCH | oklch(22.8% 0.021 142) |
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 #171F16 | 16.88:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #171F16 | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #171F16 text on white | 16.88:1 | AAA | Lc 103.8 | Preferred for body text |
| #171F16 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
#E7EBE7
oklch(93.6% 0.007 145.5)
-
Step 200
200
#D4DBD3
oklch(88.4% 0.013 141.8)
-
Step 300
300
#B8C5B6
oklch(80.9% 0.025 141.5)
-
Step 400
400
#93A791
oklch(70.7% 0.039 142.7)
-
Step 500
500
#799275
oklch(63.2% 0.051 141.2)
-
Step 600
600
#617C5E
oklch(55.6% 0.055 142.2)
-
Step 700
700
#50684E
oklch(49% 0.05 142.8)
-
Step 800
800
#425540
oklch(42.7% 0.041 142.4)
-
Step 900
900
#384636
oklch(37.7% 0.032 141.6)
-
Step 950
950 (this color)
#171F16
oklch(22.8% 0.021 142)
#171F16 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) | #201D15 | 0.017 |
| Deuteranopia (no green cones) | #1E1D16 | 0.014 |
| Tritanopia (no blue cones) | #161E1D | 0.015 |
| Achromatopsia (no color) | #1D1D1D | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #171F16
#171F16
oklch(22.8% 0.021 142)
- #211922
#211922
oklch(22.7% 0.021 322.6)
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 #171F16, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.042
- Rich Black #0D1B2A ΔE 0.048
- Dark #1B2431 ΔE 0.051
- Dark Brown #341C02 ΔE 0.059
- Rich Navy #001219 ΔE 0.068
- Dark Forest Green #002D04 ΔE 0.069
- Oxford Blue #1B263B ΔE 0.069
- Very Dark Green #062E03 ΔE 0.071
Use #171F16 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.