#16173D
Closest named color: Navy Blue (#001146). oklch(22.9% 0.071 278), rgb(22, 23, 61).
Aa
White text reads best on this color (17.15:1).
About this color
#16173D is a very dark, moderately saturated blue. In OKLCH its lightness is 23%, its chroma 0.071 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.043 away. White text reads best on it, at 17.15:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.22:1 |
| White text | 17.15:1 |
Values
| HEX | #16173D |
| RGB | rgb(22, 23, 61) |
| HSL | hsl(238, 47%, 16%) |
| OKLCH | oklch(22.9% 0.071 278) |
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 #16173D | 17.15:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #16173D | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #16173D text on white | 17.15:1 | AAA | Lc 103.9 | Preferred for body text |
| #16173D text on black | 1.22:1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E6E9FB
oklch(93.7% 0.024 278.4)
-
Step 200
200
#D1D7F9
oklch(88.5% 0.047 277.5)
-
Step 300
300
#B3BCF7
oklch(80.9% 0.084 277.6)
-
Step 400
400
#8E97F3
oklch(70.8% 0.134 278.1)
-
Step 500
500
#747AEF
oklch(63.2% 0.172 278)
-
Step 600
600
#5E5FDD
oklch(55.5% 0.188 278)
-
Step 700
700
#4E4EC0
oklch(49.1% 0.174 277.9)
-
Step 800
800
#40419B
oklch(42.8% 0.143 278)
-
Step 900
900
#35387C
oklch(37.7% 0.113 277.6)
-
Step 950
950 (this color)
#16173D
oklch(22.9% 0.071 278)
#16173D 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) | #021D3E | 0.029 |
| Deuteranopia (no green cones) | #001A3C | 0.030 |
| Tritanopia (no blue cones) | #042027 | 0.062 |
| Achromatopsia (no color) | #1B1B1B | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #16173D
#16173D
oklch(22.9% 0.071 278)
- #231D00
#231D00
oklch(23.1% 0.048 98.3)
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 #16173D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.043
- Rich Black #0D1B2A ΔE 0.044
- Oxford Blue #1B263B ΔE 0.052
- Dark Indigo #1F0954 ΔE 0.053
- Dark #1B2431 ΔE 0.055
- Midnight Purple #280137 ΔE 0.063
- Night Blue #040348 ΔE 0.064
- Very Dark Purple #2A0134 ΔE 0.067
Use #16173D 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.