#04327F
Closest named color: Marine Blue (#01386A). oklch(34.4% 0.139 260.7), rgb(4, 50, 127).
Aa
White text reads best on this color (11.87:1).
About this color
#04327F is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.139 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.041 away. White text reads best on it, at 11.87:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.76:1 |
| White text | 11.87:1 |
Values
| HEX | #04327F |
| RGB | rgb(4, 50, 127) |
| HSL | hsl(218, 94%, 26%) |
| OKLCH | oklch(34.4% 0.139 260.7) |
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 #04327F | 11.87:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #04327F | 1.76:1 | Fails | Lc 7.4 | Not readable |
| #04327F text on white | 11.87:1 | AAA | Lc 96.5 | Preferred for body text |
| #04327F text on black | 1.76:1 | 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
#DFEBFF
oklch(93.7% 0.03 260.7)
-
Step 200
200
#C4DAFF
oklch(88.4% 0.057 260.8)
-
Step 300
300
#9DC2FF
oklch(81% 0.096 260.2)
-
Step 400
400
#679FFF
oklch(70.7% 0.153 260.6)
-
Step 500
500
#3C83FF
oklch(63.2% 0.198 260.7)
-
Step 600
600
#0765F7
oklch(55.5% 0.232 260.8)
-
Step 700
700
#0054D4
oklch(49.1% 0.209 260.7)
-
Step 800
800
#0345AE
oklch(42.7% 0.178 260.7)
-
Step 900
900 (this color)
#04327F
oklch(34.4% 0.139 260.7)
-
Step 950
950
#0A2450
oklch(27% 0.087 260.3)
#04327F 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) | #003D82 | 0.030 |
| Deuteranopia (no green cones) | #00327E | 0.003 |
| Tritanopia (no blue cones) | #004653 | 0.106 |
| Achromatopsia (no color) | #373737 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04327F
#04327F
oklch(34.4% 0.139 260.7)
- #4C3400
#4C3400
oklch(34.4% 0.071 80.2)
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 #04327F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.041
- Twilight Blue #0A437A ΔE 0.051
- Marine #042E60 ΔE 0.055
- Royal #0C1793 ΔE 0.060
- Midnight Blue #191970 ΔE 0.063
- Cobalt #1E488F ΔE 0.071
- Prussian Blue #1D3557 ΔE 0.073
- Sapphire #2138AB ΔE 0.080
Use #04327F 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.