#0A1848
Closest named color: Navy Blue (#001146). oklch(23.4% 0.092 266.6), rgb(10, 24, 72).
Aa
White text reads best on this color (16.97:1).
About this color
#0A1848 is a very dark, moderately saturated blue. In OKLCH its lightness is 23%, its chroma 0.092 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.026 away. White text reads best on it, at 16.97:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.23:1 |
| White text | 16.97:1 |
Values
| HEX | #0A1848 |
| RGB | rgb(10, 24, 72) |
| HSL | hsl(226, 76%, 16%) |
| OKLCH | oklch(23.4% 0.092 266.6) |
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 #0A1848 | 16.97:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #0A1848 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #0A1848 text on white | 16.97:1 | AAA | Lc 103.6 | Preferred for body text |
| #0A1848 text on black | 1.23:1 | 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
#E1EAFF
oklch(93.7% 0.03 267.2)
-
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
#759BFF
oklch(70.6% 0.153 266.8)
-
Step 500
500
#527EFF
oklch(63% 0.198 266.5)
-
Step 600
600
#345DFD
oklch(55.5% 0.241 266.7)
-
Step 700
700
#284BDD
oklch(49.1% 0.224 266.6)
-
Step 800
800
#213FB2
oklch(42.6% 0.185 266.6)
-
Step 900
900
#1E388D
oklch(37.8% 0.145 266.4)
-
Step 950
950 (this color)
#0A1848
oklch(23.4% 0.092 266.6)
#0A1848 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) | #001F4A | 0.021 |
| Deuteranopia (no green cones) | #001A47 | 0.012 |
| Tritanopia (no blue cones) | #00242D | 0.071 |
| Achromatopsia (no color) | #1C1C1C | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A1848
#0A1848
oklch(23.4% 0.092 266.6)
- #281C00
#281C00
oklch(23.5% 0.048 86.2)
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 #0A1848, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.026
- Dark Indigo #1F0954 ΔE 0.047
- Night Blue #040348 ΔE 0.051
- Darkblue #030764 ΔE 0.059
- Rich Black #0D1B2A ΔE 0.060
- Oxford Blue #1B263B ΔE 0.061
- Dark #1B2431 ΔE 0.069
- Dark Navy #000435 ΔE 0.074
Use #0A1848 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.