#04528A
Closest named color: Light Navy (#155084). oklch(42.8% 0.114 248.2), rgb(4, 82, 138).
Aa
White text reads best on this color (8.14:1).
About this color
#04528A is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.114 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.011 away. White text reads best on it, at 8.14:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.57:1 |
| White text | 8.14:1 |
Values
| HEX | #04528A |
| RGB | rgb(4, 82, 138) |
| HSL | hsl(205, 94%, 28%) |
| OKLCH | oklch(42.8% 0.114 248.2) |
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 #04528A | 8.14:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #04528A | 2.57:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #04528A text on white | 8.14:1 | AAA | Lc 87.6 | Fine for body text |
| #04528A text on black | 2.57:1 | Fails | Lc -14.5 | 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 800.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0EBF6
oklch(93.5% 0.019 248)
-
Step 200
200
#C7DCF1
oklch(88.5% 0.037 248.2)
-
Step 300
300
#9FC5EA
oklch(80.9% 0.066 248)
-
Step 400
400
#69A6E0
oklch(70.7% 0.106 248.4)
-
Step 500
500
#3B8ED7
oklch(63% 0.136 248.4)
-
Step 600
600
#0877C5
oklch(55.6% 0.148 248.3)
-
Step 700
700
#0064A8
oklch(49.2% 0.133 248.3)
-
Step 800
800 (this color)
#04528A
oklch(42.8% 0.114 248.2)
-
Step 900
900
#12446E
oklch(37.7% 0.089 248.4)
-
Step 950
950
#0D2840
oklch(27% 0.056 248.3)
#04528A 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) | #36558C | 0.038 |
| Deuteranopia (no green cones) | #214A89 | 0.025 |
| Tritanopia (no blue cones) | #006067 | 0.082 |
| Achromatopsia (no color) | #4F4F4F | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04528A
#04528A
oklch(42.8% 0.114 248.2)
- #704400
#704400
oklch(42.8% 0.094 68.6)
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 #04528A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.011
- Deep Sea Blue #015482 ΔE 0.016
- Dusk Blue #26538D ΔE 0.021
- Cobalt #1E488F ΔE 0.032
- Light Navy Blue #2E5A88 ΔE 0.039
- Twilight Blue #0A437A ΔE 0.049
- Denim Blue #3B5B92 ΔE 0.053
- Peacock Blue #016795 ΔE 0.063
Use #04528A 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.