#170B38
Closest named color: Midnight Purple (#280137). oklch(20.1% 0.082 289), rgb(23, 11, 56).
Aa
White text reads best on this color (18.39:1).
About this color
#170B38 is a very dark, moderately saturated purple. In OKLCH its lightness is 20%, its chroma 0.082 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Purple (#280137), ΔE 0.045 away. White text reads best on it, at 18.39:1.
| Hue family | Purples |
| Lightness | very dark (20%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Midnight Purple (#280137) |
| Black text | 1.14:1 |
| White text | 18.39:1 |
Values
| HEX | #170B38 |
| RGB | rgb(23, 11, 56) |
| HSL | hsl(256, 67%, 13%) |
| OKLCH | oklch(20.1% 0.082 289) |
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 #170B38 | 18.39:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #170B38 | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #170B38 text on white | 18.39:1 | AAA | Lc 104.8 | Preferred for body text |
| #170B38 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FC
oklch(93.6% 0.028 290.2)
-
Step 200
200
#D7D4FB
oklch(88.5% 0.053 288.8)
-
Step 300
300
#BEB7FC
oklch(81% 0.097 288.7)
-
Step 400
400
#9F8EFA
oklch(70.8% 0.155 289.1)
-
Step 500
500
#8A6DF8
oklch(63.2% 0.199 289)
-
Step 600
600
#764FE6
oklch(55.6% 0.216 289.3)
-
Step 700
700
#633FC8
oklch(49.1% 0.2 288.9)
-
Step 800
800
#5135A2
oklch(42.7% 0.167 289.2)
-
Step 900
900
#423080
oklch(37.7% 0.129 289)
-
Step 950
950 (this color)
#170B38
oklch(20.1% 0.082 289)
#170B38 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) | #001539 | 0.043 |
| Deuteranopia (no green cones) | #001337 | 0.042 |
| Tritanopia (no blue cones) | #0B1620 | 0.066 |
| Achromatopsia (no color) | #141414 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #170B38
#170B38
oklch(20.1% 0.082 289)
- #181800
#181800
oklch(20.2% 0.044 109.8)
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 #170B38, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Purple #280137 ΔE 0.045
- Navy Blue #001146 ΔE 0.047
- Very Dark Purple #2A0134 ΔE 0.050
- Night Blue #040348 ΔE 0.053
- Dark Indigo #1F0954 ΔE 0.055
- Dark Navy #000435 ΔE 0.058
- Rich Black #0D1B2A ΔE 0.061
- Midnight #03012D ΔE 0.065
Use #170B38 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.