#16317D
Closest named color: Marine Blue (#01386A). oklch(34.5% 0.133 265.1), rgb(22, 49, 125).
Aa
White text reads best on this color (11.86:1).
About this color
#16317D is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.133 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.041 away. White text reads best on it, at 11.86:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.76:1 |
| White text | 11.86:1 |
Values
| HEX | #16317D |
| RGB | rgb(22, 49, 125) |
| HSL | hsl(224, 70%, 29%) |
| OKLCH | oklch(34.5% 0.133 265.1) |
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 #16317D | 11.86:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #16317D | 1.76:1 | Fails | Lc 0.0 | Not readable |
| #16317D text on white | 11.86:1 | AAA | Lc 96.7 | Preferred for body text |
| #16317D text on black | 1.76:1 | 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 900.
-
Step 50
50
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFE
oklch(93.6% 0.029 264.4)
-
Step 200
200
#C7D9FF
oklch(88.4% 0.056 265.2)
-
Step 300
300
#A3C0FF
oklch(80.9% 0.095 265.2)
-
Step 400
400
#729CFF
oklch(70.6% 0.153 265.4)
-
Step 500
500
#4D7FFF
oklch(63% 0.198 265.1)
-
Step 600
600
#3163F2
oklch(55.6% 0.221 265)
-
Step 700
700
#2551D3
oklch(49.1% 0.206 265)
-
Step 800
800
#1F43AB
oklch(42.7% 0.172 265.1)
-
Step 900
900 (this color)
#16317D
oklch(34.5% 0.133 265.1)
-
Step 950
950
#12234F
oklch(27% 0.084 265.3)
#16317D 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) | #003C80 | 0.030 |
| Deuteranopia (no green cones) | #00337C | 0.014 |
| Tritanopia (no blue cones) | #004452 | 0.103 |
| Achromatopsia (no color) | #373737 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #16317D
#16317D
oklch(34.5% 0.133 265.1)
- #4A3600
#4A3600
oklch(34.6% 0.071 85.5)
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 #16317D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.041
- Twilight Blue #0A437A ΔE 0.051
- Marine #042E60 ΔE 0.054
- Midnight Blue #191970 ΔE 0.061
- Royal #0C1793 ΔE 0.063
- Prussian Blue #1D3557 ΔE 0.069
- Cobalt #1E488F ΔE 0.070
- Sapphire #2138AB ΔE 0.081
Use #16317D 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.