#04385D
Closest named color: Prussian Blue (#1D3557). oklch(33.1% 0.082 246.5), rgb(4, 56, 93).
Aa
White text reads best on this color (12.14:1).
About this color
#04385D is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.082 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.021 away. White text reads best on it, at 12.14:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.72:1 |
| White text | 12.14:1 |
Values
| HEX | #04385D |
| RGB | rgb(4, 56, 93) |
| HSL | hsl(205, 92%, 19%) |
| OKLCH | oklch(33.1% 0.082 246.5) |
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 #04385D | 12.14:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #04385D | 1.72:1 | Fails | Lc 0.0 | Not readable |
| #04385D text on white | 12.14:1 | AAA | Lc 97.3 | Preferred for body text |
| #04385D text on black | 1.72:1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C8DCEF
oklch(88.5% 0.034 246.8)
-
Step 300
300
#A1C5E7
oklch(80.9% 0.062 247.1)
-
Step 400
400
#6BA6DB
oklch(70.6% 0.1 246.8)
-
Step 500
500
#3F8FD1
oklch(63% 0.127 246.6)
-
Step 600
600
#1478BE
oklch(55.6% 0.137 246.5)
-
Step 700
700
#0065A4
oklch(49.2% 0.127 246.3)
-
Step 800
800
#0A5285
oklch(42.6% 0.106 246.8)
-
Step 900
900 (this color)
#04385D
oklch(33.1% 0.082 246.5)
-
Step 950
950
#0E283E
oklch(26.9% 0.052 246.9)
#04385D 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) | #263A5F | 0.031 |
| Deuteranopia (no green cones) | #19325C | 0.022 |
| Tritanopia (no blue cones) | #004146 | 0.057 |
| Achromatopsia (no color) | #363636 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04385D
#04385D
oklch(33.1% 0.082 246.5)
- #4E2D00
#4E2D00
oklch(33.1% 0.073 67.3)
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 #04385D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.021
- Marine Blue #01386A ΔE 0.023
- Marine #042E60 ΔE 0.033
- Midnight Green #073B4C ΔE 0.035
- Dark Blue Grey #1F3B4D ΔE 0.038
- Gunmetal #293241 ΔE 0.056
- Twilight Blue #0A437A ΔE 0.058
- Dark Grey Blue #29465B ΔE 0.060
Use #04385D 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.