#170C33
Closest named color: Midnight Purple (#280137). oklch(19.7% 0.073 291.2), rgb(23, 12, 51).
Aa
White text reads best on this color (18.47:1).
About this color
#170C33 is a very dark, moderately saturated purple. In OKLCH its lightness is 20%, its chroma 0.073 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Midnight Purple (#280137), ΔE 0.046 away. White text reads best on it, at 18.47:1.
| Hue family | Purples |
| Lightness | very dark (20%) |
| Chroma | moderately saturated (0.073) |
| Temperature | in between |
| Nearest name | Midnight Purple (#280137) |
| Black text | 1.13:1 |
| White text | 18.47:1 |
Values
| HEX | #170C33 |
| RGB | rgb(23, 12, 51) |
| HSL | hsl(257, 62%, 12%) |
| OKLCH | oklch(19.7% 0.073 291.2) |
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 #170C33 | 18.47:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #170C33 | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #170C33 text on white | 18.47:1 | AAA | Lc 104.9 | Preferred for body text |
| #170C33 text on black | 1.13:1 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E7FA
oklch(93.5% 0.026 290.7)
-
Step 200
200
#D9D4F7
oklch(88.5% 0.048 291.9)
-
Step 300
300
#C0B7F5
oklch(80.8% 0.087 291)
-
Step 400
400
#A28FF0
oklch(70.7% 0.14 291.4)
-
Step 500
500
#8D70EA
oklch(63.1% 0.177 291.4)
-
Step 600
600
#7855D8
oklch(55.6% 0.192 291.2)
-
Step 700
700
#6544BC
oklch(49.1% 0.179 291)
-
Step 800
800
#523998
oklch(42.7% 0.148 290.9)
-
Step 900
900
#443279
oklch(37.7% 0.116 291.5)
-
Step 950
950 (this color)
#170C33
oklch(19.7% 0.073 291.2)
#170C33 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) | #001434 | 0.042 |
| Deuteranopia (no green cones) | #001332 | 0.042 |
| Tritanopia (no blue cones) | #0E151E | 0.057 |
| Achromatopsia (no color) | #141414 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #170C33
#170C33
oklch(19.7% 0.073 291.2)
- #161700
#161700
oklch(19.7% 0.044 111.9)
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 #170C33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Purple #280137 ΔE 0.046
- Very Dark Purple #2A0134 ΔE 0.050
- Navy Blue #001146 ΔE 0.053
- Rich Black #0D1B2A ΔE 0.055
- Dark Navy #000435 ΔE 0.059
- Night Blue #040348 ΔE 0.060
- Midnight #03012D ΔE 0.064
- Dark Indigo #1F0954 ΔE 0.064
Use #170C33 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.