#19173E
Closest named color: Navy Blue (#001146). oklch(23.3% 0.072 281.5), rgb(25, 23, 62).
Aa
White text reads best on this color (17.02:1).
About this color
#19173E is a very dark, moderately saturated purple. In OKLCH its lightness is 23%, its chroma 0.072 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.047 away. White text reads best on it, at 17.02:1.
| Hue family | Purples |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.23:1 |
| White text | 17.02:1 |
Values
| HEX | #19173E |
| RGB | rgb(25, 23, 62) |
| HSL | hsl(243, 46%, 17%) |
| OKLCH | oklch(23.3% 0.072 281.5) |
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 #19173E | 17.02:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #19173E | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #19173E text on white | 17.02:1 | AAA | Lc 103.8 | Preferred for body text |
| #19173E text on black | 1.23:1 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E7E8FB
oklch(93.6% 0.026 283.5)
-
Step 200
200
#D3D6F9
oklch(88.5% 0.048 281.5)
-
Step 300
300
#B7BBF7
oklch(81% 0.085 281.4)
-
Step 400
400
#9395F3
oklch(70.7% 0.136 281.4)
-
Step 500
500
#7B77EF
oklch(63.1% 0.175 281.6)
-
Step 600
600
#665CDD
oklch(55.5% 0.19 281.7)
-
Step 700
700
#554BC0
oklch(49.1% 0.177 281.6)
-
Step 800
800
#453E9B
oklch(42.6% 0.146 281.6)
-
Step 900
900
#39367C
oklch(37.6% 0.115 281.2)
-
Step 950
950 (this color)
#19173E
oklch(23.3% 0.072 281.5)
#19173E 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) | #021D3F | 0.033 |
| Deuteranopia (no green cones) | #001B3D | 0.034 |
| Tritanopia (no blue cones) | #0A2027 | 0.063 |
| Achromatopsia (no color) | #1C1C1C | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #19173E
#19173E
oklch(23.3% 0.072 281.5)
- #221E00
#221E00
oklch(23.2% 0.049 102.4)
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 #19173E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.047
- Rich Black #0D1B2A ΔE 0.048
- Dark Indigo #1F0954 ΔE 0.050
- Oxford Blue #1B263B ΔE 0.051
- Dark #1B2431 ΔE 0.054
- Midnight Purple #280137 ΔE 0.061
- Very Dark Purple #2A0134 ΔE 0.064
- Night Blue #040348 ΔE 0.067
Use #19173E 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.