#0A142C
Closest named color: Rich Black (#0D1B2A). oklch(19.7% 0.05 265.1), rgb(10, 20, 44).
Aa
White text reads best on this color (18.27:1).
About this color
#0A142C is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.050 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.027 away. White text reads best on it, at 18.27:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.14:1 |
| White text | 18.27:1 |
Values
| HEX | #0A142C |
| RGB | rgb(10, 20, 44) |
| HSL | hsl(222, 63%, 11%) |
| OKLCH | oklch(19.7% 0.05 265.1) |
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 #0A142C | 18.27:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #0A142C | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #0A142C text on white | 18.27:1 | AAA | Lc 104.8 | Preferred for body text |
| #0A142C text on black | 1.14:1 | 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
#CED9F0
oklch(88.4% 0.034 265.2)
-
Step 300
300
#AEC1E8
oklch(81% 0.059 264.6)
-
Step 400
400
#83A0DD
oklch(70.8% 0.096 264.5)
-
Step 500
500
#6587D3
oklch(63.1% 0.121 264.9)
-
Step 600
600
#4D6FC1
oklch(55.6% 0.133 265.4)
-
Step 700
700
#3E5DA6
oklch(49.2% 0.123 264.9)
-
Step 800
800
#334C87
oklch(42.7% 0.103 265.1)
-
Step 900
900
#2D406C
oklch(37.8% 0.079 265.2)
-
Step 950
950 (this color)
#0A142C
oklch(19.7% 0.05 265.1)
#0A142C 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) | #09172D | 0.010 |
| Deuteranopia (no green cones) | #05132B | 0.009 |
| Tritanopia (no blue cones) | #00191D | 0.042 |
| Achromatopsia (no color) | #151515 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A142C
#0A142C
oklch(19.7% 0.05 265.1)
- #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 #0A142C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.027
- Rich Navy #001219 ΔE 0.045
- Navy Blue #001146 ΔE 0.053
- Dark Navy #000435 ΔE 0.059
- Dark #1B2431 ΔE 0.065
- Almost Black #070D0D ΔE 0.066
- Midnight #03012D ΔE 0.067
- Dark Navy Blue #00022E ΔE 0.067
Use #0A142C 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.