#170D17
Closest named color: Almost Black (#070D0D). oklch(17.8% 0.026 326.6), rgb(23, 13, 23).
Aa
White text reads best on this color (18.98:1).
About this color
#170D17 is a very dark close to neutral grey. In OKLCH its lightness is 18%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Almost Black (#070D0D), ΔE 0.041 away. White text reads best on it, at 18.98:1.
| Hue family | Neutrals |
| Lightness | very dark (18%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.10:1 |
| White text | 18.98:1 |
Values
| HEX | #170D17 |
| RGB | rgb(23, 13, 23) |
| HSL | hsl(300, 28%, 7%) |
| OKLCH | oklch(17.8% 0.026 326.6) |
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 #170D17 | 18.98:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #170D17 | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #170D17 text on white | 18.98:1 | AAA | Lc 105.4 | Preferred for body text |
| #170D17 text on black | 1.10:1 | 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
#F7F4F7
oklch(97% 0.005 325.6)
-
Step 100
100
#EDE8ED
oklch(93.6% 0.009 325.6)
-
Step 200
200
#DFD5DF
oklch(88.4% 0.017 325.7)
-
Step 300
300
#CCBACB
oklch(80.9% 0.031 327.6)
-
Step 400
400
#B196B1
oklch(70.6% 0.049 326.1)
-
Step 500
500
#9E7D9D
oklch(63.2% 0.061 327.2)
-
Step 600
600
#886588
oklch(55.4% 0.068 326.4)
-
Step 700
700
#745474
oklch(49.1% 0.064 326.5)
-
Step 800
800
#5E455E
oklch(42.7% 0.052 326.4)
-
Step 900
900
#4D3A4D
oklch(37.7% 0.041 326.3)
-
Step 950
950 (this color)
#170D17
oklch(17.8% 0.026 326.6)
#170D17 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) | #0C1017 | 0.024 |
| Deuteranopia (no green cones) | #0F1117 | 0.021 |
| Tritanopia (no blue cones) | #180E11 | 0.014 |
| Achromatopsia (no color) | #101010 | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #170D17
#170D17
oklch(17.8% 0.026 326.6)
- #09140A
#09140A
oklch(17.7% 0.026 146.6)
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 #170D17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.041
- Rich Navy #001219 ΔE 0.046
- Rich Black #0D1B2A ΔE 0.055
- Very Dark Brown #1D0200 ΔE 0.057
- Very Dark Purple #2A0134 ΔE 0.080
- Midnight Purple #280137 ΔE 0.082
- Midnight #03012D ΔE 0.084
- Dark #1B2431 ΔE 0.086
Use #170D17 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.