#04508F
Closest named color: Light Navy (#155084). oklch(42.7% 0.123 251.3), rgb(4, 80, 143).
Aa
White text reads best on this color (8.23:1).
About this color
#04508F is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.123 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.019 away. White text reads best on it, at 8.23:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.54:1 |
| White text | 8.23:1 |
Values
| HEX | #04508F |
| RGB | rgb(4, 80, 143) |
| HSL | hsl(207, 95%, 29%) |
| OKLCH | oklch(42.7% 0.123 251.3) |
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 #04508F | 8.23:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #04508F | 2.54:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #04508F text on white | 8.23:1 | AAA | Lc 87.9 | Fine for body text |
| #04508F text on black | 2.54:1 | Fails | Lc -14.3 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C6DCF3
oklch(88.5% 0.04 249.5)
-
Step 300
300
#9FC4EE
oklch(80.8% 0.072 251.9)
-
Step 400
400
#68A5E6
oklch(70.7% 0.115 251.2)
-
Step 500
500
#3B8DDE
oklch(63.2% 0.146 251)
-
Step 600
600
#0A75CC
oklch(55.6% 0.159 251.2)
-
Step 700
700
#0062AE
oklch(49.1% 0.143 251.1)
-
Step 800
800 (this color)
#04508F
oklch(42.7% 0.123 251.3)
-
Step 900
900
#124372
oklch(37.7% 0.095 251.3)
-
Step 950
950
#0D2843
oklch(27.2% 0.06 251)
#04508F 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) | #2F5591 | 0.034 |
| Deuteranopia (no green cones) | #14498E | 0.020 |
| Tritanopia (no blue cones) | #005F68 | 0.089 |
| Achromatopsia (no color) | #4F4F4F | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04508F
#04508F
oklch(42.7% 0.123 251.3)
- #6E4500
#6E4500
oklch(42.8% 0.092 71.2)
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 #04508F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.019
- Dusk Blue #26538D ΔE 0.023
- Cobalt #1E488F ΔE 0.024
- Deep Sea Blue #015482 ΔE 0.027
- Light Navy Blue #2E5A88 ΔE 0.045
- Twilight Blue #0A437A ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.056
- Peacock Blue #016795 ΔE 0.068
Use #04508F 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.