#0D365D
Closest named color: Prussian Blue (#1D3557). oklch(32.8% 0.082 251.1), rgb(13, 54, 93).
Aa
White text reads best on this color (12.33:1).
About this color
#0D365D is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.082 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.016 away. White text reads best on it, at 12.33:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.70:1 |
| White text | 12.33:1 |
Values
| HEX | #0D365D |
| RGB | rgb(13, 54, 93) |
| HSL | hsl(209, 75%, 21%) |
| OKLCH | oklch(32.8% 0.082 251.1) |
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 #0D365D | 12.33:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #0D365D | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #0D365D text on white | 12.33:1 | AAA | Lc 97.8 | Preferred for body text |
| #0D365D text on black | 1.70:1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBF0
oklch(88.4% 0.035 252.3)
-
Step 300
300
#A4C4E8
oklch(80.9% 0.062 251.6)
-
Step 400
400
#71A5DC
oklch(70.7% 0.098 250.7)
-
Step 500
500
#4A8DD3
oklch(63.1% 0.126 251.4)
-
Step 600
600
#2976C0
oklch(55.6% 0.137 251.1)
-
Step 700
700
#1A63A6
oklch(49.2% 0.127 250.9)
-
Step 800
800
#195186
oklch(42.7% 0.105 250.8)
-
Step 900
900 (this color)
#0D365D
oklch(32.8% 0.082 251.1)
-
Step 950
950
#11283F
oklch(27.1% 0.052 250.3)
#0D365D 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) | #23395F | 0.025 |
| Deuteranopia (no green cones) | #16315C | 0.016 |
| Tritanopia (no blue cones) | #003F45 | 0.059 |
| Achromatopsia (no color) | #353535 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D365D
#0D365D
oklch(32.8% 0.082 251.1)
- #4B2D00
#4B2D00
oklch(32.7% 0.071 70.3)
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 #0D365D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.016
- Marine Blue #01386A ΔE 0.023
- Marine #042E60 ΔE 0.028
- Midnight Green #073B4C ΔE 0.038
- Dark Blue Grey #1F3B4D ΔE 0.040
- Gunmetal #293241 ΔE 0.054
- Space Cadet #2B2D42 ΔE 0.057
- Twilight Blue #0A437A ΔE 0.060
Use #0D365D 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.