#171329
Closest named color: Rich Black (#0D1B2A). oklch(20.4% 0.043 290.4), rgb(23, 19, 41).
Aa
White text reads best on this color (18.07:1).
About this color
#171329 is a very dark, muted purple. In OKLCH its lightness is 20%, its chroma 0.043 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.030 away. White text reads best on it, at 18.07:1.
| Hue family | Purples |
| Lightness | very dark (20%) |
| Chroma | muted (0.043) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.07:1 |
Values
| HEX | #171329 |
| RGB | rgb(23, 19, 41) |
| HSL | hsl(251, 37%, 12%) |
| OKLCH | oklch(20.4% 0.043 290.4) |
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 #171329 | 18.07:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #171329 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #171329 text on white | 18.07:1 | AAA | Lc 104.8 | Preferred for body text |
| #171329 text on black | 1.16:1 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E8F3
oklch(93.5% 0.015 290.3)
-
Step 200
200
#D8D6EB
oklch(88.4% 0.029 290.2)
-
Step 300
300
#C0BCE0
oklch(81% 0.05 290.3)
-
Step 400
400
#A098D0
oklch(70.7% 0.081 290.7)
-
Step 500
500
#897EC4
oklch(63.1% 0.104 290.3)
-
Step 600
600
#7366B0
oklch(55.5% 0.113 290.3)
-
Step 700
700
#615598
oklch(49.2% 0.105 290.2)
-
Step 800
800
#4F457B
oklch(42.6% 0.088 290.7)
-
Step 900
900
#413B63
oklch(37.7% 0.067 289.6)
-
Step 950
950 (this color)
#171329
oklch(20.4% 0.043 290.4)
#171329 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) | #0C172A | 0.022 |
| Deuteranopia (no green cones) | #0C1628 | 0.021 |
| Tritanopia (no blue cones) | #13171B | 0.036 |
| Achromatopsia (no color) | #161616 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #171329
#171329
oklch(20.4% 0.043 290.4)
- #181801
#181801
oklch(20.3% 0.042 109.6)
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 #171329, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.030
- Rich Navy #001219 ΔE 0.055
- Dark #1B2431 ΔE 0.059
- Midnight Purple #280137 ΔE 0.064
- Very Dark Purple #2A0134 ΔE 0.064
- Navy Blue #001146 ΔE 0.067
- Oxford Blue #1B263B ΔE 0.068
- Almost Black #070D0D ΔE 0.069
Use #171329 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.