#0B1B44
Closest named color: Navy Blue (#001146). oklch(23.7% 0.08 264.8), rgb(11, 27, 68).
Aa
White text reads best on this color (16.74:1).
About this color
#0B1B44 is a very dark, moderately saturated blue. In OKLCH its lightness is 24%, its chroma 0.080 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.035 away. White text reads best on it, at 16.74:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.25:1 |
| White text | 16.74:1 |
Values
| HEX | #0B1B44 |
| RGB | rgb(11, 27, 68) |
| HSL | hsl(223, 72%, 15%) |
| OKLCH | oklch(23.7% 0.08 264.8) |
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 #0B1B44 | 16.74:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #0B1B44 | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #0B1B44 text on white | 16.74:1 | AAA | Lc 103.4 | Preferred for body text |
| #0B1B44 text on black | 1.25:1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C8D9FD
oklch(88.4% 0.053 265.3)
-
Step 300
300
#A2C0FF
oklch(80.9% 0.096 264.7)
-
Step 400
400
#719DFF
oklch(70.8% 0.152 264.6)
-
Step 500
500
#4D80FD
oklch(63.1% 0.194 264.7)
-
Step 600
600
#3365ED
oklch(55.6% 0.212 264.8)
-
Step 700
700
#2753CE
oklch(49.2% 0.197 264.8)
-
Step 800
800
#2145A6
oklch(42.7% 0.162 264.8)
-
Step 900
900
#1F3B84
oklch(37.7% 0.128 265)
-
Step 950
950 (this color)
#0B1B44
oklch(23.7% 0.08 264.8)
#0B1B44 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) | #012045 | 0.017 |
| Deuteranopia (no green cones) | #001B43 | 0.013 |
| Tritanopia (no blue cones) | #00252C | 0.064 |
| Achromatopsia (no color) | #1E1E1E | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B1B44
#0B1B44
oklch(23.7% 0.08 264.8)
- #291C00
#291C00
oklch(23.6% 0.048 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 #0B1B44, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.035
- Oxford Blue #1B263B ΔE 0.050
- Rich Black #0D1B2A ΔE 0.051
- Dark Indigo #1F0954 ΔE 0.055
- Dark #1B2431 ΔE 0.057
- Night Blue #040348 ΔE 0.061
- Darkblue #030764 ΔE 0.070
- Marine #042E60 ΔE 0.073
Use #0B1B44 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.