#171E15
Closest named color: Jet (#212529). oklch(22.5% 0.02 138.8), rgb(23, 30, 21).
Aa
White text reads best on this color (17.03:1).
About this color
#171E15 is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.045 away. White text reads best on it, at 17.03:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.23:1 |
| White text | 17.03:1 |
Values
| HEX | #171E15 |
| RGB | rgb(23, 30, 21) |
| HSL | hsl(107, 18%, 10%) |
| OKLCH | oklch(22.5% 0.02 138.8) |
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 #171E15 | 17.03:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #171E15 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #171E15 text on white | 17.03:1 | AAA | Lc 103.9 | Preferred for body text |
| #171E15 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
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E8EBE7
oklch(93.7% 0.006 137.8)
-
Step 200
200
#D5DBD3
oklch(88.5% 0.013 137.8)
-
Step 300
300
#B9C5B6
oklch(81% 0.025 139.4)
-
Step 400
400
#95A790
oklch(70.8% 0.039 138.9)
-
Step 500
500
#7B9175
oklch(63.1% 0.048 139)
-
Step 600
600
#647B5D
oklch(55.6% 0.053 138.5)
-
Step 700
700
#53684D
oklch(49.2% 0.049 138.8)
-
Step 800
800
#44553F
oklch(42.8% 0.041 138.6)
-
Step 900
900
#394636
oklch(37.7% 0.032 139.8)
-
Step 950
950 (this color)
#171E15
oklch(22.5% 0.02 138.8)
#171E15 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) | #1F1C14 | 0.015 |
| Deuteranopia (no green cones) | #1D1C15 | 0.013 |
| Tritanopia (no blue cones) | #171D1C | 0.015 |
| Achromatopsia (no color) | #1C1C1C | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #171E15
#171E15
oklch(22.5% 0.02 138.8)
- #201922
#201922
oklch(22.6% 0.02 318.7)
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 #171E15, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.045
- Rich Black #0D1B2A ΔE 0.047
- Dark #1B2431 ΔE 0.053
- Dark Brown #341C02 ΔE 0.060
- Rich Navy #001219 ΔE 0.066
- Oxford Blue #1B263B ΔE 0.071
- Dark Forest Green #002D04 ΔE 0.072
- Very Dark Green #062E03 ΔE 0.074
Use #171E15 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.