#20171C
Closest named color: Rich Black (#0D1B2A). oklch(21.8% 0.017 344.2), rgb(32, 23, 28).
Aa
White text reads best on this color (17.48:1).
About this color
#20171C is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.017. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.040 away. White text reads best on it, at 17.48:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.48:1 |
Values
| HEX | #20171C |
| RGB | rgb(32, 23, 28) |
| HSL | hsl(327, 16%, 11%) |
| OKLCH | oklch(21.8% 0.017 344.2) |
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 #20171C | 17.48:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #20171C | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #20171C text on white | 17.48:1 | AAA | Lc 104.3 | Preferred for body text |
| #20171C 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
#F7F5F6
oklch(97.2% 0.002 345.2)
-
Step 100
100
#EDE8EB
oklch(93.6% 0.007 340.4)
-
Step 200
200
#DFD6DB
oklch(88.5% 0.012 342.7)
-
Step 300
300
#CBBCC4
oklch(81% 0.02 344.1)
-
Step 400
400
#B099A5
oklch(70.7% 0.032 345.1)
-
Step 500
500
#9C8090
oklch(63.1% 0.041 343.1)
-
Step 600
600
#87697A
oklch(55.6% 0.045 343.7)
-
Step 700
700
#725766
oklch(49% 0.042 344.3)
-
Step 800
800
#5D4854
oklch(42.8% 0.034 343.4)
-
Step 900
900
#4C3C45
oklch(37.7% 0.027 343.6)
-
Step 950
950 (this color)
#20171C
oklch(21.8% 0.017 344.2)
#20171C 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) | #17191C | 0.019 |
| Deuteranopia (no green cones) | #1A1A1C | 0.015 |
| Tritanopia (no blue cones) | #211719 | 0.006 |
| Achromatopsia (no color) | #1A1A1A | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #20171C
#20171C
oklch(21.8% 0.017 344.2)
- #131D18
#131D18
oklch(21.9% 0.017 162.8)
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 #20171C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.040
- Jet #212529 ΔE 0.049
- Dark #1B2431 ΔE 0.051
- Dark Brown #341C02 ΔE 0.065
- Rich Navy #001219 ΔE 0.065
- Oxford Blue #1B263B ΔE 0.067
- Almost Black #070D0D ΔE 0.070
- Dark Maroon #3C0008 ΔE 0.078
Use #20171C 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.