#0A2B4D
Closest named color: Marine (#042E60). oklch(28.6% 0.073 252.5), rgb(10, 43, 77).
Aa
White text reads best on this color (14.32:1).
About this color
#0A2B4D is a dark, moderately saturated blue. In OKLCH its lightness is 29%, its chroma 0.073 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.034 away. White text reads best on it, at 14.32:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.46:1 |
| White text | 14.32:1 |
Values
| HEX | #0A2B4D |
| RGB | rgb(10, 43, 77) |
| HSL | hsl(210, 77%, 17%) |
| OKLCH | oklch(28.6% 0.073 252.5) |
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 #0A2B4D | 14.32:1 | AAA | Lc -103.8 | Preferred for body text |
| Black text on #0A2B4D | 1.46:1 | Fails | Lc 0.0 | Not readable |
| #0A2B4D text on white | 14.32:1 | AAA | Lc 100.8 | Preferred for body text |
| #0A2B4D text on black | 1.46:1 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DEEBFB
oklch(93.5% 0.026 253.6)
-
Step 200
200
#C3DCF9
oklch(88.5% 0.048 252.2)
-
Step 300
300
#99C5F7
oklch(81% 0.085 252.1)
-
Step 400
400
#5CA4F4
oklch(70.7% 0.139 252.5)
-
Step 500
500
#228BF0
oklch(63.2% 0.176 252.5)
-
Step 600
600
#0073D2
oklch(55.5% 0.17 252.7)
-
Step 700
700
#0061B2
oklch(49.2% 0.149 252.5)
-
Step 800
800
#004F93
oklch(42.7% 0.13 252.6)
-
Step 900
900
#00427C
oklch(37.8% 0.114 252.4)
-
Step 950
950 (this color)
#0A2B4D
oklch(28.6% 0.073 252.5)
#0A2B4D 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) | #1B2D4E | 0.020 |
| Deuteranopia (no green cones) | #10274C | 0.013 |
| Tritanopia (no blue cones) | #003338 | 0.054 |
| Achromatopsia (no color) | #2A2A2A | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A2B4D
#0A2B4D
oklch(28.6% 0.073 252.5)
- #3C2400
#3C2400
oklch(28.4% 0.061 72.1)
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 #0A2B4D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.034
- Oxford Blue #1B263B ΔE 0.036
- Prussian Blue #1D3557 ΔE 0.042
- Space Cadet #2B2D42 ΔE 0.047
- Gunmetal #293241 ΔE 0.053
- Dark #1B2431 ΔE 0.053
- Midnight Green #073B4C ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.061
Use #0A2B4D 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.