#045390
Closest named color: Dusk Blue (#26538D). oklch(43.5% 0.121 249.9), rgb(4, 83, 144).
Aa
White text reads best on this color (7.93:1).
About this color
#045390 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.121 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.019 away. White text reads best on it, at 7.93:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.64:1 |
| White text | 7.93:1 |
Values
| HEX | #045390 |
| RGB | rgb(4, 83, 144) |
| HSL | hsl(206, 95%, 29%) |
| OKLCH | oklch(43.5% 0.121 249.9) |
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 #045390 | 7.93:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #045390 | 2.64:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #045390 text on white | 7.93:1 | AAA | Lc 86.9 | Fine for body text |
| #045390 text on black | 2.64:1 | Fails | Lc -15.2 | Dividers and decoration only |
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
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C6DCF3
oklch(88.5% 0.04 249.5)
-
Step 300
300
#9EC5ED
oklch(80.9% 0.071 249.4)
-
Step 400
400
#67A5E4
oklch(70.6% 0.113 250.1)
-
Step 500
500
#398DDC
oklch(63% 0.144 250.1)
-
Step 600
600
#0176CA
oklch(55.7% 0.156 249.8)
-
Step 700
700
#0063AB
oklch(49.2% 0.138 249.7)
-
Step 800
800 (this color)
#045390
oklch(43.5% 0.121 249.9)
-
Step 900
900
#104371
oklch(37.6% 0.094 250.3)
-
Step 950
950
#0C2842
oklch(27.1% 0.059 249.5)
#045390 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) | #345792 | 0.036 |
| Deuteranopia (no green cones) | #1C4C8F | 0.021 |
| Tritanopia (no blue cones) | #00626A | 0.088 |
| Achromatopsia (no color) | #515151 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045390
#045390
oklch(43.5% 0.121 249.9)
- #724600
#724600
oklch(43.5% 0.095 69.4)
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 #045390, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.019
- Light Navy #155084 ΔE 0.020
- Deep Sea Blue #015482 ΔE 0.024
- Cobalt #1E488F ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.049
- Twilight Blue #0A437A ΔE 0.056
- Peacock Blue #016795 ΔE 0.059
Use #045390 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.