#170B1B
Closest named color: Almost Black (#070D0D). oklch(17.5% 0.037 317.3), rgb(23, 11, 27).
Aa
White text reads best on this color (19.08:1).
About this color
#170B1B is a very dark, muted purple. In OKLCH its lightness is 18%, its chroma 0.037 and its hue 317°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Almost Black (#070D0D), ΔE 0.048 away. White text reads best on it, at 19.08:1.
| Hue family | Purples |
| Lightness | very dark (18%) |
| Chroma | muted (0.037) |
| Temperature | in between |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.10:1 |
| White text | 19.08:1 |
Values
| HEX | #170B1B |
| RGB | rgb(23, 11, 27) |
| HSL | hsl(285, 42%, 7%) |
| OKLCH | oklch(17.5% 0.037 317.3) |
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 #170B1B | 19.08:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #170B1B | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #170B1B text on white | 19.08:1 | AAA | Lc 105.4 | Preferred for body text |
| #170B1B text on black | 1.10:1 | 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
#EDE7EF
oklch(93.5% 0.012 317.7)
-
Step 200
200
#E0D4E4
oklch(88.4% 0.025 317.7)
-
Step 300
300
#CCB8D3
oklch(80.8% 0.043 317.3)
-
Step 400
400
#B393BD
oklch(70.6% 0.07 318)
-
Step 500
500
#A078AD
oklch(63.1% 0.09 317.7)
-
Step 600
600
#8A6198
oklch(55.6% 0.095 317.3)
-
Step 700
700
#755082
oklch(49.1% 0.089 317)
-
Step 800
800
#60426A
oklch(42.9% 0.074 317.4)
-
Step 900
900
#4E3856
oklch(37.8% 0.057 316.8)
-
Step 950
950 (this color)
#170B1B
oklch(17.5% 0.037 317.3)
#170B1B 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) | #090F1C | 0.030 |
| Deuteranopia (no green cones) | #0C101B | 0.028 |
| Tritanopia (no blue cones) | #170D11 | 0.024 |
| Achromatopsia (no color) | #101010 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #170B1B
#170B1B
oklch(17.5% 0.037 317.3)
- #081405
#081405
oklch(17.5% 0.036 138.6)
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 #170B1B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.048
- Rich Navy #001219 ΔE 0.051
- Rich Black #0D1B2A ΔE 0.058
- Very Dark Brown #1D0200 ΔE 0.063
- Very Dark Purple #2A0134 ΔE 0.071
- Midnight Purple #280137 ΔE 0.073
- Midnight #03012D ΔE 0.076
- Dark Navy Blue #00022E ΔE 0.081
Use #170B1B 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.