#170B1E
Closest named color: Rich Navy (#001219). oklch(17.7% 0.041 312), rgb(23, 11, 30).
Aa
White text reads best on this color (19.03:1).
About this color
#170B1E is a very dark, muted purple. In OKLCH its lightness is 18%, its chroma 0.041 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.052 away. White text reads best on it, at 19.03:1.
| Hue family | Purples |
| Lightness | very dark (18%) |
| Chroma | muted (0.041) |
| Temperature | in between |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.10:1 |
| White text | 19.03:1 |
Values
| HEX | #170B1E |
| RGB | rgb(23, 11, 30) |
| HSL | hsl(278, 46%, 8%) |
| OKLCH | oklch(17.7% 0.041 312) |
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 #170B1E | 19.03:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #170B1E | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #170B1E text on white | 19.03:1 | AAA | Lc 105.4 | Preferred for body text |
| #170B1E 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EDE7F1
oklch(93.6% 0.015 312.2)
-
Step 200
200
#DFD4E6
oklch(88.4% 0.027 312.6)
-
Step 300
300
#CBB8D8
oklch(80.9% 0.049 311.7)
-
Step 400
400
#B193C4
oklch(70.7% 0.077 312.1)
-
Step 500
500
#9E77B5
oklch(63% 0.1 312.4)
-
Step 600
600
#895FA1
oklch(55.6% 0.109 312.5)
-
Step 700
700
#744E8A
oklch(49% 0.102 312.2)
-
Step 800
800
#5E4170
oklch(42.7% 0.083 311.6)
-
Step 900
900
#4D375B
oklch(37.7% 0.066 311.5)
-
Step 950
950 (this color)
#170B1E
oklch(17.7% 0.041 312)
#170B1E 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) | #070F1F | 0.034 |
| Deuteranopia (no green cones) | #0A101D | 0.031 |
| Tritanopia (no blue cones) | #160E13 | 0.028 |
| Achromatopsia (no color) | #101010 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #170B1E
#170B1E
oklch(17.7% 0.041 312)
- #0A1502
#0A1502
oklch(17.9% 0.043 131.9)
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 #170B1E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.052
- Almost Black #070D0D ΔE 0.053
- Rich Black #0D1B2A ΔE 0.056
- Very Dark Purple #2A0134 ΔE 0.067
- Midnight Purple #280137 ΔE 0.068
- Very Dark Brown #1D0200 ΔE 0.069
- Midnight #03012D ΔE 0.072
- Dark Navy #000435 ΔE 0.076
Use #170B1E 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.