#0A2038
Closest named color: Rich Black (#0D1B2A). oklch(24% 0.054 252.7), rgb(10, 32, 56).
Aa
White text reads best on this color (16.44:1).
About this color
#0A2038 is a very dark, muted blue. In OKLCH its lightness is 24%, its chroma 0.054 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.029 away. White text reads best on it, at 16.44:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.27:1 |
| White text | 16.44:1 |
Values
| HEX | #0A2038 |
| RGB | rgb(10, 32, 56) |
| HSL | hsl(211, 70%, 13%) |
| OKLCH | oklch(24% 0.054 252.7) |
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 #0A2038 | 16.44:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #0A2038 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #0A2038 text on white | 16.44:1 | AAA | Lc 103.3 | Preferred for body text |
| #0A2038 text on black | 1.27:1 | 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
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBF1
oklch(88.5% 0.036 253.5)
-
Step 300
300
#A4C4EA
oklch(81% 0.064 253)
-
Step 400
400
#71A4DF
oklch(70.6% 0.103 252.8)
-
Step 500
500
#4A8CD6
oklch(63% 0.131 252.9)
-
Step 600
600
#2A75C3
oklch(55.6% 0.141 252.6)
-
Step 700
700
#1B62A9
oklch(49.2% 0.132 252.5)
-
Step 800
800
#1A5089
oklch(42.7% 0.11 252.9)
-
Step 900
900
#1C436D
oklch(37.7% 0.085 252.5)
-
Step 950
950 (this color)
#0A2038
oklch(24% 0.054 252.7)
#0A2038 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) | #152239 | 0.016 |
| Deuteranopia (no green cones) | #0E1D38 | 0.011 |
| Tritanopia (no blue cones) | #002629 | 0.042 |
| Achromatopsia (no color) | #1F1F1F | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A2038
#0A2038
oklch(24% 0.054 252.7)
- #2E1B00
#2E1B00
oklch(24.1% 0.051 73.2)
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 #0A2038, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.029
- Dark #1B2431 ΔE 0.032
- Oxford Blue #1B263B ΔE 0.032
- Jet #212529 ΔE 0.050
- Navy Blue #001146 ΔE 0.058
- Space Cadet #2B2D42 ΔE 0.070
- Rich Navy #001219 ΔE 0.078
- Gunmetal #293241 ΔE 0.079
Use #0A2038 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.