#0A1C42
Closest named color: Navy Blue (#001146). oklch(23.7% 0.076 262.9), rgb(10, 28, 66).
Aa
White text reads best on this color (16.69:1).
About this color
#0A1C42 is a very dark, moderately saturated blue. In OKLCH its lightness is 24%, its chroma 0.076 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.038 away. White text reads best on it, at 16.69:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.25:1 |
| White text | 16.69:1 |
Values
| HEX | #0A1C42 |
| RGB | rgb(10, 28, 66) |
| HSL | hsl(221, 74%, 15%) |
| OKLCH | oklch(23.7% 0.076 262.9) |
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 #0A1C42 | 16.69:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #0A1C42 | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #0A1C42 text on white | 16.69:1 | AAA | Lc 103.4 | Preferred for body text |
| #0A1C42 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
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C8DAFB
oklch(88.5% 0.05 262.6)
-
Step 300
300
#A2C1FC
oklch(80.9% 0.091 263)
-
Step 400
400
#709EFA
oklch(70.7% 0.144 263.1)
-
Step 500
500
#4B83F7
oklch(63.2% 0.184 262.9)
-
Step 600
600
#2F69E6
oklch(55.7% 0.2 262.9)
-
Step 700
700
#2256C8
oklch(49.1% 0.186 262.9)
-
Step 800
800
#1D47A2
oklch(42.7% 0.155 262.9)
-
Step 900
900
#1D3D80
oklch(37.7% 0.12 262.8)
-
Step 950
950 (this color)
#0A1C42
oklch(23.7% 0.076 262.9)
#0A1C42 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) | #052143 | 0.016 |
| Deuteranopia (no green cones) | #001B41 | 0.013 |
| Tritanopia (no blue cones) | #00252B | 0.061 |
| Achromatopsia (no color) | #1E1E1E | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A1C42
#0A1C42
oklch(23.7% 0.076 262.9)
- #2A1C00
#2A1C00
oklch(23.8% 0.049 82.5)
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 #0A1C42, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.038
- Oxford Blue #1B263B ΔE 0.046
- Rich Black #0D1B2A ΔE 0.046
- Dark #1B2431 ΔE 0.053
- Dark Indigo #1F0954 ΔE 0.060
- Night Blue #040348 ΔE 0.065
- Jet #212529 ΔE 0.071
- Marine #042E60 ΔE 0.074
Use #0A1C42 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.