#0A1028
Closest named color: Rich Navy (#001219). oklch(18.3% 0.05 270.3), rgb(10, 16, 40).
Aa
White text reads best on this color (18.78:1).
About this color
#0A1028 is a very dark, muted blue. In OKLCH its lightness is 18%, its chroma 0.050 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.039 away. White text reads best on it, at 18.78:1.
| Hue family | Blues |
| Lightness | very dark (18%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.11:1 |
| White text | 18.78:1 |
Values
| HEX | #0A1028 |
| RGB | rgb(10, 16, 40) |
| HSL | hsl(228, 60%, 10%) |
| OKLCH | oklch(18.3% 0.05 270.3) |
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 #0A1028 | 18.78:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #0A1028 | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #0A1028 text on white | 18.78:1 | AAA | Lc 105.2 | Preferred for body text |
| #0A1028 text on black | 1.11:1 | 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
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D1D9F0
oklch(88.6% 0.033 270.4)
-
Step 300
300
#B2BFE8
oklch(80.8% 0.06 271.2)
-
Step 400
400
#8A9EDC
oklch(70.8% 0.094 270.2)
-
Step 500
500
#6E84D2
oklch(63% 0.12 270.7)
-
Step 600
600
#566DBF
oklch(55.6% 0.13 270)
-
Step 700
700
#475AA5
oklch(49% 0.122 270.7)
-
Step 800
800
#3A4A86
oklch(42.7% 0.101 270.4)
-
Step 900
900
#323E6B
oklch(37.6% 0.079 270.9)
-
Step 950
950 (this color)
#0A1028
oklch(18.3% 0.05 270.3)
#0A1028 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) | #051329 | 0.012 |
| Deuteranopia (no green cones) | #021027 | 0.014 |
| Tritanopia (no blue cones) | #00151A | 0.042 |
| Achromatopsia (no color) | #121212 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A1028
#0A1028
oklch(18.3% 0.05 270.3)
- #191100
#191100
oklch(18.3% 0.037 88.4)
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 #0A1028, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.039
- Rich Black #0D1B2A ΔE 0.040
- Dark Navy #000435 ΔE 0.052
- Midnight #03012D ΔE 0.056
- Almost Black #070D0D ΔE 0.057
- Dark Navy Blue #00022E ΔE 0.057
- Navy Blue #001146 ΔE 0.060
- Very Dark Blue #000133 ΔE 0.060
Use #0A1028 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.