#170B19
Closest named color: Almost Black (#070D0D). oklch(17.4% 0.034 321.7), rgb(23, 11, 25).
Aa
White text reads best on this color (19.11:1).
About this color
#170B19 is a very dark, muted purple. In OKLCH its lightness is 17%, its chroma 0.034 and its hue 322°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Almost Black (#070D0D), ΔE 0.046 away. White text reads best on it, at 19.11:1.
| Hue family | Purples |
| Lightness | very dark (17%) |
| Chroma | muted (0.034) |
| Temperature | in between |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.09:1 |
| White text | 19.11:1 |
Values
| HEX | #170B19 |
| RGB | rgb(23, 11, 25) |
| HSL | hsl(291, 39%, 7%) |
| OKLCH | oklch(17.4% 0.034 321.7) |
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 #170B19 | 19.11:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #170B19 | 1.09:1 | Fails | Lc 0.0 | Not readable |
| #170B19 text on white | 19.11:1 | AAA | Lc 105.4 | Preferred for body text |
| #170B19 text on black | 1.09:1 | 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
#F7F4F8
oklch(97.1% 0.006 317.8)
-
Step 100
100
#EEE7EE
oklch(93.5% 0.012 325.7)
-
Step 200
200
#E0D5E2
oklch(88.6% 0.021 321)
-
Step 300
300
#CDB9D0
oklch(81% 0.039 321.8)
-
Step 400
400
#B494B9
oklch(70.8% 0.064 321.8)
-
Step 500
500
#A179A7
oklch(63.1% 0.082 322)
-
Step 600
600
#8B6292
oklch(55.6% 0.087 321.5)
-
Step 700
700
#76517D
oklch(49.2% 0.081 321)
-
Step 800
800
#604265
oklch(42.6% 0.068 321.6)
-
Step 900
900
#4F3852
oklch(37.7% 0.053 322.6)
-
Step 950
950 (this color)
#170B19
oklch(17.4% 0.034 321.7)
#170B19 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) | #090E1A | 0.030 |
| Deuteranopia (no green cones) | #0C1019 | 0.028 |
| Tritanopia (no blue cones) | #170D10 | 0.022 |
| Achromatopsia (no color) | #0F0F0F | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #170B19
#170B19
oklch(17.4% 0.034 321.7)
- #071406
#071406
oklch(17.4% 0.035 142.1)
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 #170B19, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.046
- Rich Navy #001219 ΔE 0.050
- Very Dark Brown #1D0200 ΔE 0.059
- Rich Black #0D1B2A ΔE 0.059
- Very Dark Purple #2A0134 ΔE 0.075
- Midnight Purple #280137 ΔE 0.076
- Midnight #03012D ΔE 0.078
- Dark Navy Blue #00022E ΔE 0.083
Use #170B19 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.