#171129
Closest named color: Rich Black (#0D1B2A). oklch(19.9% 0.047 293.2), rgb(23, 17, 41).
Aa
White text reads best on this color (18.28:1).
About this color
#171129 is a very dark, muted purple. In OKLCH its lightness is 20%, its chroma 0.047 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.036 away. White text reads best on it, at 18.28:1.
| Hue family | Purples |
| Lightness | very dark (20%) |
| Chroma | muted (0.047) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.14:1 |
| White text | 18.28:1 |
Values
| HEX | #171129 |
| RGB | rgb(23, 17, 41) |
| HSL | hsl(255, 41%, 11%) |
| OKLCH | oklch(19.9% 0.047 293.2) |
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 #171129 | 18.28:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #171129 | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #171129 text on white | 18.28:1 | AAA | Lc 104.9 | Preferred for body text |
| #171129 text on black | 1.14:1 | 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
#EAE8F4
oklch(93.6% 0.016 293.7)
-
Step 200
200
#D9D6EC
oklch(88.5% 0.03 292)
-
Step 300
300
#C1BAE2
oklch(80.8% 0.056 293.1)
-
Step 400
400
#A296D4
oklch(70.6% 0.09 292.8)
-
Step 500
500
#8D7BC8
oklch(63.1% 0.115 293.6)
-
Step 600
600
#7763B5
oklch(55.6% 0.125 293.1)
-
Step 700
700
#64529B
oklch(49.1% 0.114 293.1)
-
Step 800
800
#52437E
oklch(42.7% 0.096 293.6)
-
Step 900
900
#433965
oklch(37.6% 0.074 292.9)
-
Step 950
950 (this color)
#171129
oklch(19.9% 0.047 293.2)
#171129 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) | #09152A | 0.026 |
| Deuteranopia (no green cones) | #0A1428 | 0.024 |
| Tritanopia (no blue cones) | #13161B | 0.038 |
| Achromatopsia (no color) | #151515 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #171129
#171129
oklch(19.9% 0.047 293.2)
- #161800
#161800
oklch(20% 0.045 113.8)
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 #171129, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.036
- Rich Navy #001219 ΔE 0.056
- Midnight Purple #280137 ΔE 0.060
- Very Dark Purple #2A0134 ΔE 0.061
- Dark #1B2431 ΔE 0.066
- Navy Blue #001146 ΔE 0.067
- Almost Black #070D0D ΔE 0.068
- Dark Navy #000435 ΔE 0.071
Use #171129 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.