#0B2565
Closest named color: Marine (#042E60). oklch(29.2% 0.117 263.8), rgb(11, 37, 101).
Aa
White text reads best on this color (14.31:1).
About this color
#0B2565 is a dark, moderately saturated blue. In OKLCH its lightness is 29%, its chroma 0.117 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.027 away. White text reads best on it, at 14.31:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.46:1 |
| White text | 14.31:1 |
Values
| HEX | #0B2565 |
| RGB | rgb(11, 37, 101) |
| HSL | hsl(223, 80%, 22%) |
| OKLCH | oklch(29.2% 0.117 263.8) |
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 #0B2565 | 14.31:1 | AAA | Lc -103.6 | Preferred for body text |
| Black text on #0B2565 | 1.46:1 | Fails | Lc 0.0 | Not readable |
| #0B2565 text on white | 14.31:1 | AAA | Lc 100.6 | Preferred for body text |
| #0B2565 text on black | 1.46:1 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C6DAFF
oklch(88.5% 0.056 262.8)
-
Step 300
300
#A1C0FF
oklch(80.8% 0.096 264.1)
-
Step 400
400
#6F9DFF
oklch(70.7% 0.152 263.9)
-
Step 500
500
#4980FF
oklch(63% 0.198 264)
-
Step 600
600
#2160FF
oklch(55.7% 0.244 263.7)
-
Step 700
700
#003FF7
oklch(49.1% 0.272 263.8)
-
Step 800
800
#0032CE
oklch(42.7% 0.238 263.8)
-
Step 900
900
#0731A1
oklch(37.7% 0.185 263.7)
-
Step 950
950 (this color)
#0B2565
oklch(29.2% 0.117 263.8)
#0B2565 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) | #002E67 | 0.025 |
| Deuteranopia (no green cones) | #002664 | 0.008 |
| Tritanopia (no blue cones) | #003541 | 0.089 |
| Achromatopsia (no color) | #2A2A2A | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B2565
#0B2565
oklch(29.2% 0.117 263.8)
- #3A2900
#3A2900
oklch(29.3% 0.06 84.3)
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 #0B2565, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.027
- Midnight Blue #191970 ΔE 0.034
- Marine Blue #01386A ΔE 0.054
- Prussian Blue #1D3557 ΔE 0.062
- Dark Royal Blue #02066F ΔE 0.062
- Darkblue #030764 ΔE 0.064
- Deep Blue #040273 ΔE 0.066
- Dark Indigo #1F0954 ΔE 0.071
Use #0B2565 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.