#0A142D
Closest named color: Rich Black (#0D1B2A). oklch(19.8% 0.052 265.5), rgb(10, 20, 45).
Aa
White text reads best on this color (18.24:1).
About this color
#0A142D is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.052 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.028 away. White text reads best on it, at 18.24:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.15:1 |
| White text | 18.24:1 |
Values
| HEX | #0A142D |
| RGB | rgb(10, 20, 45) |
| HSL | hsl(223, 64%, 11%) |
| OKLCH | oklch(19.8% 0.052 265.5) |
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 #0A142D | 18.24:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #0A142D | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #0A142D text on white | 18.24:1 | AAA | Lc 104.8 | Preferred for body text |
| #0A142D text on black | 1.15:1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CED9F1
oklch(88.4% 0.035 266)
-
Step 300
300
#AEC1EA
oklch(81% 0.062 265.5)
-
Step 400
400
#839FDF
oklch(70.6% 0.099 265.8)
-
Step 500
500
#6486D6
oklch(63% 0.127 265.5)
-
Step 600
600
#4C6EC3
oklch(55.5% 0.138 265.7)
-
Step 700
700
#3D5CA9
oklch(49.1% 0.128 265.5)
-
Step 800
800
#334B89
oklch(42.6% 0.107 266.1)
-
Step 900
900
#2C3F6D
oklch(37.6% 0.083 265.7)
-
Step 950
950 (this color)
#0A142D
oklch(19.8% 0.052 265.5)
#0A142D 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) | #08172E | 0.010 |
| Deuteranopia (no green cones) | #04142C | 0.009 |
| Tritanopia (no blue cones) | #001A1E | 0.044 |
| Achromatopsia (no color) | #151515 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A142D
#0A142D
oklch(19.8% 0.052 265.5)
- #1E1400
#1E1400
oklch(19.9% 0.041 85.5)
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 #0A142D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.028
- Rich Navy #001219 ΔE 0.046
- Navy Blue #001146 ΔE 0.052
- Dark Navy #000435 ΔE 0.058
- Dark #1B2431 ΔE 0.065
- Midnight #03012D ΔE 0.067
- Dark Navy Blue #00022E ΔE 0.067
- Almost Black #070D0D ΔE 0.067
Use #0A142D 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.