#0A1429
Closest named color: Rich Black (#0D1B2A). oklch(19.5% 0.045 263.6), rgb(10, 20, 41).
Aa
White text reads best on this color (18.34:1).
About this color
#0A1429 is a very dark, muted blue. In OKLCH its lightness is 19%, its chroma 0.045 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.026 away. White text reads best on it, at 18.34:1.
| Hue family | Blues |
| Lightness | very dark (19%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.14:1 |
| White text | 18.34:1 |
Values
| HEX | #0A1429 |
| RGB | rgb(10, 20, 41) |
| HSL | hsl(221, 61%, 10%) |
| OKLCH | oklch(19.5% 0.045 263.6) |
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 #0A1429 | 18.34:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #0A1429 | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #0A1429 text on white | 18.34:1 | AAA | Lc 104.9 | Preferred for body text |
| #0A1429 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#CFD9ED
oklch(88.4% 0.03 264.4)
-
Step 300
300
#AFC1E4
oklch(80.9% 0.053 263.7)
-
Step 400
400
#85A0D6
oklch(70.6% 0.085 263.8)
-
Step 500
500
#6788CC
oklch(63.1% 0.11 263.8)
-
Step 600
600
#4E71B8
oklch(55.6% 0.118 263.2)
-
Step 700
700
#3F5E9F
oklch(49% 0.111 263.6)
-
Step 800
800
#344D81
oklch(42.6% 0.092 263.6)
-
Step 900
900
#2E4167
oklch(37.8% 0.07 263.2)
-
Step 950
950 (this color)
#0A1429
oklch(19.5% 0.045 263.6)
#0A1429 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) | #0B162A | 0.007 |
| Deuteranopia (no green cones) | #071329 | 0.006 |
| Tritanopia (no blue cones) | #00191C | 0.039 |
| Achromatopsia (no color) | #151515 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A1429
#0A1429
oklch(19.5% 0.045 263.6)
- #1D1300
#1D1300
oklch(19.5% 0.04 84.8)
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 #0A1429, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.026
- Rich Navy #001219 ΔE 0.039
- Navy Blue #001146 ΔE 0.059
- Almost Black #070D0D ΔE 0.060
- Dark Navy #000435 ΔE 0.061
- Dark #1B2431 ΔE 0.065
- Midnight #03012D ΔE 0.068
- Dark Navy Blue #00022E ΔE 0.068
Use #0A1429 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.