#0A2136
Closest named color: Rich Black (#0D1B2A). oklch(24.2% 0.05 248.8), rgb(10, 33, 54).
Aa
White text reads best on this color (16.35:1).
About this color
#0A2136 is a very dark, muted blue. In OKLCH its lightness is 24%, its chroma 0.050 and its hue 249°. 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 16.35:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.28:1 |
| White text | 16.35:1 |
Values
| HEX | #0A2136 |
| RGB | rgb(10, 33, 54) |
| HSL | hsl(209, 69%, 13%) |
| OKLCH | oklch(24.2% 0.05 248.8) |
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 #0A2136 | 16.35:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #0A2136 | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #0A2136 text on white | 16.35:1 | AAA | Lc 103.2 | Preferred for body text |
| #0A2136 text on black | 1.28:1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C9DBEE
oklch(88.4% 0.033 249.6)
-
Step 300
300
#A4C4E6
oklch(80.8% 0.059 250.1)
-
Step 400
400
#71A6D9
oklch(70.8% 0.094 248.3)
-
Step 500
500
#498ECF
oklch(63.1% 0.121 249.1)
-
Step 600
600
#2777BC
oklch(55.6% 0.131 248.9)
-
Step 700
700
#1964A2
oklch(49.2% 0.122 248.8)
-
Step 800
800
#185283
oklch(42.8% 0.1 248.5)
-
Step 900
900
#1B4469
oklch(37.7% 0.078 248.6)
-
Step 950
950 (this color)
#0A2136
oklch(24.2% 0.05 248.8)
#0A2136 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) | #182237 | 0.019 |
| Deuteranopia (no green cones) | #111E36 | 0.012 |
| Tritanopia (no blue cones) | #002629 | 0.037 |
| Achromatopsia (no color) | #202020 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A2136
#0A2136
oklch(24.2% 0.05 248.8)
- #2F1B02
#2F1B02
oklch(24.3% 0.05 69.3)
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 #0A2136, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.028
- Dark #1B2431 ΔE 0.028
- Oxford Blue #1B263B ΔE 0.031
- Jet #212529 ΔE 0.045
- Navy Blue #001146 ΔE 0.063
- Space Cadet #2B2D42 ΔE 0.068
- Rich Navy #001219 ΔE 0.077
- Gunmetal #293241 ΔE 0.077
Use #0A2136 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.