#0A1D4D
Closest named color: Navy Blue (#001146). oklch(25% 0.092 264.3), rgb(10, 29, 77).
Aa
White text reads best on this color (16.20:1).
About this color
#0A1D4D is a dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.092 and its hue 264°. 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 16.20:1.
| Hue family | Blues |
| Lightness | dark (25%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.29:1 |
| White text | 16.20:1 |
Values
| HEX | #0A1D4D |
| RGB | rgb(10, 29, 77) |
| HSL | hsl(223, 77%, 17%) |
| OKLCH | oklch(25% 0.092 264.3) |
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 #0A1D4D | 16.20:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #0A1D4D | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #0A1D4D text on white | 16.20:1 | AAA | Lc 102.8 | Preferred for body text |
| #0A1D4D 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C7D9FF
oklch(88.4% 0.056 265.2)
-
Step 300
300
#A2C0FF
oklch(80.9% 0.096 264.7)
-
Step 400
400
#709DFF
oklch(70.7% 0.152 264.2)
-
Step 500
500
#4B80FF
oklch(63.1% 0.197 264.4)
-
Step 600
600
#265FFE
oklch(55.5% 0.243 264.4)
-
Step 700
700
#1A4DDE
oklch(49.1% 0.226 264.3)
-
Step 800
800
#1741B3
oklch(42.8% 0.186 264.2)
-
Step 900
900
#18398D
oklch(37.7% 0.145 264.2)
-
Step 950
950 (this color)
#0A1D4D
oklch(25% 0.092 264.3)
#0A1D4D 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) | #00244F | 0.021 |
| Deuteranopia (no green cones) | #001D4C | 0.011 |
| Tritanopia (no blue cones) | #002931 | 0.073 |
| Achromatopsia (no color) | #202020 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A1D4D
#0A1D4D
oklch(25% 0.092 264.3)
- #2D1F00
#2D1F00
oklch(25% 0.051 84.2)
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 #0A1D4D, 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 0.051
- Oxford Blue #1B263B ΔE 0.053
- Marine #042E60 ΔE 0.059
- Darkblue #030764 ΔE 0.060
- Dark #1B2431 ΔE 0.065
- Night Blue #040348 ΔE 0.066
- Midnight Blue #191970 ΔE 0.066
Use #0A1D4D 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.