#170D27
Closest named color: Rich Black (#0D1B2A). oklch(18.9% 0.052 299.1), rgb(23, 13, 39).
Aa
White text reads best on this color (18.69:1).
About this color
#170D27 is a very dark, muted purple. In OKLCH its lightness is 19%, its chroma 0.052 and its hue 299°. 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 18.69:1.
| Hue family | Purples |
| Lightness | very dark (19%) |
| Chroma | muted (0.052) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.12:1 |
| White text | 18.69:1 |
Values
| HEX | #170D27 |
| RGB | rgb(23, 13, 39) |
| HSL | hsl(263, 50%, 10%) |
| OKLCH | oklch(18.9% 0.052 299.1) |
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 #170D27 | 18.69:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #170D27 | 1.12:1 | Fails | Lc 0.0 | Not readable |
| #170D27 text on white | 18.69:1 | AAA | Lc 105.1 | Preferred for body text |
| #170D27 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE7F4
oklch(93.5% 0.018 300.1)
-
Step 200
200
#DCD5ED
oklch(88.6% 0.033 299)
-
Step 300
300
#C6B8E3
oklch(80.8% 0.062 299.9)
-
Step 400
400
#A993D5
oklch(70.7% 0.097 299.2)
-
Step 500
500
#9477CA
oklch(63.1% 0.125 298.9)
-
Step 600
600
#7F5EB7
oklch(55.6% 0.137 299)
-
Step 700
700
#6C4D9E
oklch(49.1% 0.128 299.3)
-
Step 800
800
#584080
oklch(42.8% 0.105 299.2)
-
Step 900
900
#483767
oklch(37.8% 0.082 298.8)
-
Step 950
950 (this color)
#170D27
oklch(18.9% 0.052 299.1)
#170D27 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) | #051228 | 0.035 |
| Deuteranopia (no green cones) | #071226 | 0.032 |
| Tritanopia (no blue cones) | #141218 | 0.039 |
| Achromatopsia (no color) | #121212 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #170D27
#170D27
oklch(18.9% 0.052 299.1)
- #111600
#111600
oklch(18.8% 0.045 119.9)
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 #170D27, 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 0.056
- Very Dark Purple #2A0134 ΔE 0.057
- Rich Navy #001219 ΔE 0.057
- Almost Black #070D0D ΔE 0.066
- Dark Navy #000435 ΔE 0.067
- Midnight #03012D ΔE 0.068
- Navy Blue #001146 ΔE 0.071
Use #170D27 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.