#0B1B52
Closest named color: Navy Blue (#001146). oklch(25.1% 0.103 266.3), rgb(11, 27, 82).
Aa
White text reads best on this color (16.24:1).
About this color
#0B1B52 is a dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.103 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.041 away. White text reads best on it, at 16.24:1.
| Hue family | Blues |
| Lightness | dark (25%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.29:1 |
| White text | 16.24:1 |
Values
| HEX | #0B1B52 |
| RGB | rgb(11, 27, 82) |
| HSL | hsl(226, 76%, 18%) |
| OKLCH | oklch(25.1% 0.103 266.3) |
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 #0B1B52 | 16.24:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #0B1B52 | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #0B1B52 text on white | 16.24:1 | AAA | Lc 102.8 | Preferred for body text |
| #0B1B52 text on black | 1.29:1 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A4BFFF
oklch(80.8% 0.096 266.6)
-
Step 400
400
#749CFF
oklch(70.8% 0.152 266)
-
Step 500
500
#527EFF
oklch(63% 0.198 266.5)
-
Step 600
600
#315DFF
oklch(55.6% 0.244 266.2)
-
Step 700
700
#2143EB
oklch(49% 0.251 266.3)
-
Step 800
800
#1C3ABE
oklch(42.8% 0.207 266.4)
-
Step 900
900
#1A3596
oklch(37.8% 0.162 266.3)
-
Step 950
950 (this color)
#0B1B52
oklch(25.1% 0.103 266.3)
#0B1B52 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) | #002454 | 0.025 |
| Deuteranopia (no green cones) | #001D51 | 0.011 |
| Tritanopia (no blue cones) | #002933 | 0.080 |
| Achromatopsia (no color) | #202020 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B1B52
#0B1B52
oklch(25.1% 0.103 266.3)
- #2D2000
#2D2000
oklch(25.2% 0.052 86.4)
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 #0B1B52, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.041
- Dark Indigo #1F0954 ΔE 0.045
- Darkblue #030764 ΔE 0.050
- Midnight Blue #191970 ΔE 0.057
- Marine #042E60 ΔE 0.059
- Dark Royal Blue #02066F ΔE 0.062
- Oxford Blue #1B263B ΔE 0.063
- Night Blue #040348 ΔE 0.063
Use #0B1B52 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.