#0A1B4D
Closest named color: Navy Blue (#001146). oklch(24.6% 0.095 265.4), rgb(10, 27, 77).
Aa
White text reads best on this color (16.44:1).
About this color
#0A1B4D is a very dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.095 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.036 away. White text reads best on it, at 16.44:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.27:1 |
| White text | 16.44:1 |
Values
| HEX | #0A1B4D |
| RGB | rgb(10, 27, 77) |
| HSL | hsl(225, 77%, 17%) |
| OKLCH | oklch(24.6% 0.095 265.4) |
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 #0A1B4D | 16.44:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #0A1B4D | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #0A1B4D text on white | 16.44:1 | AAA | Lc 103.1 | Preferred for body text |
| #0A1B4D text on black | 1.27:1 | 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
#C8D9FF
oklch(88.5% 0.056 266.2)
-
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
#4F7FFF
oklch(63.1% 0.197 265.6)
-
Step 600
600
#2C5EFF
oklch(55.6% 0.244 265.3)
-
Step 700
700
#204AE2
oklch(49.2% 0.233 265.5)
-
Step 800
800
#1B3EB6
oklch(42.6% 0.193 265.5)
-
Step 900
900
#1A3790
oklch(37.7% 0.151 265.6)
-
Step 950
950 (this color)
#0A1B4D
oklch(24.6% 0.095 265.4)
#0A1B4D 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) | #00224F | 0.021 |
| Deuteranopia (no green cones) | #001C4C | 0.011 |
| Tritanopia (no blue cones) | #002831 | 0.074 |
| Achromatopsia (no color) | #1F1F1F | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A1B4D
#0A1B4D
oklch(24.6% 0.095 265.4)
- #2B1E00
#2B1E00
oklch(24.4% 0.05 85.4)
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 #0A1B4D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.036
- Dark Indigo #1F0954 ΔE 0.047
- Darkblue #030764 ΔE 0.056
- Oxford Blue #1B263B ΔE 0.058
- Night Blue #040348 ΔE 0.060
- Marine #042E60 ΔE 0.063
- Midnight Blue #191970 ΔE 0.066
- Rich Black #0D1B2A ΔE 0.067
Use #0A1B4D 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.