#0A1B42
Closest named color: Navy Blue (#001146). oklch(23.5% 0.078 263.7), rgb(10, 27, 66).
Aa
White text reads best on this color (16.82:1).
About this color
#0A1B42 is a very dark, moderately saturated blue. In OKLCH its lightness is 23%, its chroma 0.078 and its hue 264°. 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 16.82:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.24:1 |
| White text | 16.82:1 |
Values
| HEX | #0A1B42 |
| RGB | rgb(10, 27, 66) |
| HSL | hsl(222, 74%, 15%) |
| OKLCH | oklch(23.5% 0.078 263.7) |
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 #0A1B42 | 16.82:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #0A1B42 | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #0A1B42 text on white | 16.82:1 | AAA | Lc 103.5 | Preferred for body text |
| #0A1B42 text on black | 1.24:1 | 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
#C8DAFC
oklch(88.6% 0.051 263.2)
-
Step 300
300
#A2C1FD
oklch(81% 0.092 263.3)
-
Step 400
400
#719EFC
oklch(70.8% 0.147 263.7)
-
Step 500
500
#4C82F9
oklch(63.1% 0.187 263.6)
-
Step 600
600
#3167E8
oklch(55.5% 0.204 263.8)
-
Step 700
700
#2455CA
oklch(49.1% 0.19 263.7)
-
Step 800
800
#1F46A3
oklch(42.6% 0.157 263.8)
-
Step 900
900
#1E3C81
oklch(37.6% 0.122 263.8)
-
Step 950
950 (this color)
#0A1B42
oklch(23.5% 0.078 263.7)
#0A1B42 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) | #032043 | 0.016 |
| Deuteranopia (no green cones) | #001B41 | 0.012 |
| Tritanopia (no blue cones) | #00242B | 0.060 |
| Achromatopsia (no color) | #1D1D1D | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A1B42
#0A1B42
oklch(23.5% 0.078 263.7)
- #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 #0A1B42, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.035
- Rich Black #0D1B2A ΔE 0.047
- Oxford Blue #1B263B ΔE 0.049
- Dark #1B2431 ΔE 0.055
- Dark Indigo #1F0954 ΔE 0.058
- Night Blue #040348 ΔE 0.062
- Darkblue #030764 ΔE 0.073
- Jet #212529 ΔE 0.074
Use #0A1B42 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.