#170D28
Closest named color: Rich Black (#0D1B2A). oklch(18.9% 0.053 298.2), rgb(23, 13, 40).
Aa
White text reads best on this color (18.67:1).
About this color
#170D28 is a very dark, muted purple. In OKLCH its lightness is 19%, its chroma 0.053 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.048 away. White text reads best on it, at 18.67:1.
| Hue family | Purples |
| Lightness | very dark (19%) |
| Chroma | muted (0.053) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.12:1 |
| White text | 18.67:1 |
Values
| HEX | #170D28 |
| RGB | rgb(23, 13, 40) |
| HSL | hsl(262, 51%, 10%) |
| OKLCH | oklch(18.9% 0.053 298.2) |
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 #170D28 | 18.67:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #170D28 | 1.12:1 | Fails | Lc 0.0 | Not readable |
| #170D28 text on white | 18.67:1 | AAA | Lc 105.1 | Preferred for body text |
| #170D28 text on black | 1.12:1 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EBE7F5
oklch(93.5% 0.019 299.1)
-
Step 200
200
#DCD5EE
oklch(88.6% 0.035 298.5)
-
Step 300
300
#C5B8E5
oklch(80.8% 0.064 298.2)
-
Step 400
400
#A893D8
oklch(70.8% 0.101 297.7)
-
Step 500
500
#9476CD
oklch(63.1% 0.13 298.5)
-
Step 600
600
#7F5EBA
oklch(55.7% 0.14 298.3)
-
Step 700
700
#6B4DA0
oklch(49.2% 0.13 298.1)
-
Step 800
800
#573F82
oklch(42.7% 0.109 298.2)
-
Step 900
900
#483668
oklch(37.7% 0.085 298.9)
-
Step 950
950 (this color)
#170D28
oklch(18.9% 0.053 298.2)
#170D28 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) | #041229 | 0.036 |
| Deuteranopia (no green cones) | #061227 | 0.034 |
| Tritanopia (no blue cones) | #131218 | 0.041 |
| Achromatopsia (no color) | #121212 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #170D28
#170D28
oklch(18.9% 0.053 298.2)
- #121600
#121600
oklch(18.9% 0.044 118)
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 #170D28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.048
- Midnight Purple #280137 ΔE 0.055
- Very Dark Purple #2A0134 ΔE 0.056
- Rich Navy #001219 ΔE 0.059
- Dark Navy #000435 ΔE 0.066
- Midnight #03012D ΔE 0.067
- Almost Black #070D0D ΔE 0.067
- Navy Blue #001146 ΔE 0.070
Use #170D28 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.