#0A2A4C
Closest named color: Oxford Blue (#1B263B). oklch(28.2% 0.073 253), rgb(10, 42, 76).
Aa
White text reads best on this color (14.49:1).
About this color
#0A2A4C is a dark, moderately saturated blue. In OKLCH its lightness is 28%, its chroma 0.073 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.034 away. White text reads best on it, at 14.49:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.44:1 |
| White text | 14.49:1 |
Values
| HEX | #0A2A4C |
| RGB | rgb(10, 42, 76) |
| HSL | hsl(211, 77%, 17%) |
| OKLCH | oklch(28.2% 0.073 253) |
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 #0A2A4C | 14.49:1 | AAA | Lc -104.0 | Preferred for body text |
| Black text on #0A2A4C | 1.44:1 | Fails | Lc 0.0 | Not readable |
| #0A2A4C text on white | 14.49:1 | AAA | Lc 101.0 | Preferred for body text |
| #0A2A4C text on black | 1.44:1 | 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
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C4DCF9
oklch(88.6% 0.048 253.2)
-
Step 300
300
#99C4F7
oklch(80.8% 0.086 253.1)
-
Step 400
400
#5EA4F4
oklch(70.8% 0.138 253.1)
-
Step 500
500
#268AF0
oklch(63.1% 0.177 253.2)
-
Step 600
600
#0073D4
oklch(55.6% 0.172 253.1)
-
Step 700
700
#0060B3
oklch(49% 0.152 253.2)
-
Step 800
800
#004F94
oklch(42.8% 0.131 252.8)
-
Step 900
900
#02417C
oklch(37.6% 0.115 253.3)
-
Step 950
950 (this color)
#0A2A4C
oklch(28.2% 0.073 253)
#0A2A4C 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) | #1A2D4D | 0.020 |
| Deuteranopia (no green cones) | #0E274B | 0.010 |
| Tritanopia (no blue cones) | #003237 | 0.054 |
| Achromatopsia (no color) | #292929 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A2A4C
#0A2A4C
oklch(28.2% 0.073 253)
- #3B2400
#3B2400
oklch(28.3% 0.06 73.4)
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 #0A2A4C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.034
- Marine #042E60 ΔE 0.037
- Prussian Blue #1D3557 ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.048
- Dark #1B2431 ΔE 0.051
- Gunmetal #293241 ΔE 0.054
- Midnight Green #073B4C ΔE 0.058
- Dark Blue Grey #1F3B4D ΔE 0.064
Use #0A2A4C 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.