#171A0C
Closest named color: Rich Black (#0D1B2A). oklch(21% 0.026 118.6), rgb(23, 26, 12).
Aa
White text reads best on this color (17.65:1).
About this color
#171A0C is a very dark close to neutral grey. In OKLCH its lightness is 21%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.057 away. White text reads best on it, at 17.65:1.
| Hue family | Neutrals |
| Lightness | very dark (21%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.18:1 |
| White text | 17.65:1 |
Values
| HEX | #171A0C |
| RGB | rgb(23, 26, 12) |
| HSL | hsl(73, 37%, 7%) |
| OKLCH | oklch(21% 0.026 118.6) |
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 #171A0C | 17.65:1 | AAA | Lc -106.7 | Preferred for body text |
| Black text on #171A0C | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #171A0C text on white | 17.65:1 | AAA | Lc 104.5 | Preferred for body text |
| #171A0C text on black | 1.18:1 | 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
#F5F6F3
oklch(97.2% 0.004 121.6)
-
Step 100
100
#E9EBE4
oklch(93.7% 0.01 119.6)
-
Step 200
200
#D8DBCE
oklch(88.6% 0.018 117.3)
-
Step 300
300
#BEC4AE
oklch(81% 0.031 119.5)
-
Step 400
400
#9DA583
oklch(70.6% 0.049 118.4)
-
Step 500
500
#858F63
oklch(63% 0.063 118.7)
-
Step 600
600
#6F794A
oklch(55.6% 0.069 118.5)
-
Step 700
700
#5D663B
oklch(49.1% 0.064 118.5)
-
Step 800
800
#4C5331
oklch(42.7% 0.053 118.2)
-
Step 900
900
#3F452C
oklch(37.8% 0.041 119.4)
-
Step 950
950 (this color)
#171A0C
oklch(21% 0.026 118.6)
#171A0C 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) | #1C190B | 0.010 |
| Deuteranopia (no green cones) | #1B190D | 0.009 |
| Tritanopia (no blue cones) | #181917 | 0.022 |
| Achromatopsia (no color) | #191919 | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #171A0C
#171A0C
oklch(21% 0.026 118.6)
- #1A1623
#1A1623
oklch(21.1% 0.026 298.3)
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 #171A0C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.057
- Rich Navy #001219 ΔE 0.061
- Jet #212529 ΔE 0.062
- Dark Brown #341C02 ΔE 0.062
- Almost Black #070D0D ΔE 0.063
- Dark #1B2431 ΔE 0.070
- Dark Forest Green #002D04 ΔE 0.077
- Very Dark Green #062E03 ΔE 0.080
Use #171A0C 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.