#181217
Closest named color: Rich Black (#0D1B2A). oklch(19.2% 0.014 331.8), rgb(24, 18, 23).
Aa
White text reads best on this color (18.45:1).
About this color
#181217 is a very dark close to neutral grey. In OKLCH its lightness is 19%, its chroma 0.014. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.044 away. White text reads best on it, at 18.45:1.
| Hue family | Neutrals |
| Lightness | very dark (19%) |
| Chroma | close to neutral grey (0.014) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.13:1 |
| White text | 18.45:1 |
Values
| HEX | #181217 |
| RGB | rgb(24, 18, 23) |
| HSL | hsl(310, 14%, 8%) |
| OKLCH | oklch(19.2% 0.014 331.8) |
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 #181217 | 18.45:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #181217 | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #181217 text on white | 18.45:1 | AAA | Lc 105.1 | Preferred for body text |
| #181217 text on black | 1.13:1 | 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
#F6F5F6
oklch(97.1% 0.002 325.6)
-
Step 100
100
#ECE9EB
oklch(93.7% 0.004 337.4)
-
Step 200
200
#DDD7DC
oklch(88.5% 0.009 331)
-
Step 300
300
#C7BDC5
oklch(80.9% 0.016 332.3)
-
Step 400
400
#AB9BA8
oklch(70.7% 0.026 332.1)
-
Step 500
500
#968293
oklch(63% 0.034 330.9)
-
Step 600
600
#806C7D
oklch(55.6% 0.036 331)
-
Step 700
700
#6D5A69
oklch(49.2% 0.034 333.4)
-
Step 800
800
#584A56
oklch(42.8% 0.027 330.8)
-
Step 900
900
#493D47
oklch(37.6% 0.023 331.6)
-
Step 950
950 (this color)
#181217
oklch(19.2% 0.014 331.8)
#181217 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) | #121317 | 0.012 |
| Deuteranopia (no green cones) | #131417 | 0.012 |
| Tritanopia (no blue cones) | #191214 | 0.006 |
| Achromatopsia (no color) | #141414 | 0.014 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
This color is close to neutral, so it has no meaningful hue to rotate. Hue harmonies are omitted.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #181217, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.044
- Rich Navy #001219 ΔE 0.045
- Almost Black #070D0D ΔE 0.045
- Very Dark Brown #1D0200 ΔE 0.064
- Dark #1B2431 ΔE 0.071
- Jet #212529 ΔE 0.072
- Dark Brown #341C02 ΔE 0.084
- Oxford Blue #1B263B ΔE 0.087
Use #181217 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.