#03327B
Closest named color: Marine Blue (#01386A). oklch(34% 0.133 260), rgb(3, 50, 123).
Aa
White text reads best on this color (12.02:1).
About this color
#03327B is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.133 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.035 away. White text reads best on it, at 12.02:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.74:1 |
| White text | 12.02:1 |
Values
| HEX | #03327B |
| RGB | rgb(3, 50, 123) |
| HSL | hsl(217, 95%, 25%) |
| OKLCH | oklch(34% 0.133 260) |
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 #03327B | 12.02:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #03327B | 1.74:1 | Fails | Lc 0.0 | Not readable |
| #03327B text on white | 12.02:1 | AAA | Lc 96.8 | Preferred for body text |
| #03327B text on black | 1.74:1 | 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 900.
-
Step 50
50
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFE
oklch(93.7% 0.029 259.6)
-
Step 200
200
#C4DAFF
oklch(88.4% 0.057 260.8)
-
Step 300
300
#9CC2FF
oklch(80.9% 0.096 259.7)
-
Step 400
400
#669FFF
oklch(70.7% 0.154 260.3)
-
Step 500
500
#3883FF
oklch(63% 0.199 260)
-
Step 600
600
#0768F2
oklch(55.7% 0.222 260)
-
Step 700
700
#0056CF
oklch(49.1% 0.2 260)
-
Step 800
800
#0347AA
oklch(42.8% 0.17 259.9)
-
Step 900
900 (this color)
#03327B
oklch(34% 0.133 260)
-
Step 950
950
#0B244F
oklch(27% 0.085 260.5)
#03327B 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) | #003C7D | 0.028 |
| Deuteranopia (no green cones) | #00317A | 0.004 |
| Tritanopia (no blue cones) | #004551 | 0.102 |
| Achromatopsia (no color) | #363636 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03327B
#03327B
oklch(34% 0.133 260)
- #4B3300
#4B3300
oklch(34% 0.071 79.7)
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 #03327B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.035
- Marine #042E60 ΔE 0.048
- Twilight Blue #0A437A ΔE 0.050
- Midnight Blue #191970 ΔE 0.061
- Royal #0C1793 ΔE 0.064
- Prussian Blue #1D3557 ΔE 0.067
- Cobalt #1E488F ΔE 0.074
- Dark Blue #00008B ΔE 0.085
Use #03327B 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.