#170B27
Closest named color: Rich Black (#0D1B2A). oklch(18.4% 0.056 300.8), rgb(23, 11, 39).
Aa
White text reads best on this color (18.85:1).
About this color
#170B27 is a very dark, muted purple. In OKLCH its lightness is 18%, its chroma 0.056 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.054 away. White text reads best on it, at 18.85:1.
| Hue family | Purples |
| Lightness | very dark (18%) |
| Chroma | muted (0.056) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.11:1 |
| White text | 18.85:1 |
Values
| HEX | #170B27 |
| RGB | rgb(23, 11, 39) |
| HSL | hsl(266, 56%, 10%) |
| OKLCH | oklch(18.4% 0.056 300.8) |
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 #170B27 | 18.85:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #170B27 | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #170B27 text on white | 18.85:1 | AAA | Lc 105.2 | Preferred for body text |
| #170B27 text on black | 1.11:1 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#ECE7F5
oklch(93.6% 0.019 302.2)
-
Step 200
200
#DDD4EE
oklch(88.5% 0.037 301.4)
-
Step 300
300
#C7B7E5
oklch(80.8% 0.066 300.8)
-
Step 400
400
#AC91D8
oklch(70.7% 0.105 301.2)
-
Step 500
500
#9874CE
oklch(63.1% 0.136 301.1)
-
Step 600
600
#835BBB
oklch(55.7% 0.147 301)
-
Step 700
700
#6F4AA1
oklch(49.1% 0.137 301.1)
-
Step 800
800
#5A3D82
oklch(42.6% 0.113 301.1)
-
Step 900
900
#4A3569
oklch(37.8% 0.089 300.9)
-
Step 950
950 (this color)
#170B27
oklch(18.4% 0.056 300.8)
#170B27 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) | #021128 | 0.042 |
| Deuteranopia (no green cones) | #051126 | 0.037 |
| Tritanopia (no blue cones) | #141117 | 0.043 |
| Achromatopsia (no color) | #111111 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #170B27
#170B27
oklch(18.4% 0.056 300.8)
- #101500
#101500
oklch(18.4% 0.044 120.1)
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 #170B27, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.054
- Midnight Purple #280137 ΔE 0.054
- Very Dark Purple #2A0134 ΔE 0.055
- Rich Navy #001219 ΔE 0.060
- Midnight #03012D ΔE 0.064
- Dark Navy #000435 ΔE 0.066
- Almost Black #070D0D ΔE 0.067
- Dark Navy Blue #00022E ΔE 0.070
Use #170B27 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.