#045383
Closest named color: Deep Sea Blue (#015482). oklch(42.6% 0.104 244.3), rgb(4, 83, 131).
Aa
White text reads best on this color (8.17:1).
About this color
#045383 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.104 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.004 away. White text reads best on it, at 8.17:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.57:1 |
| White text | 8.17:1 |
Values
| HEX | #045383 |
| RGB | rgb(4, 83, 131) |
| HSL | hsl(203, 94%, 26%) |
| OKLCH | oklch(42.6% 0.104 244.3) |
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 #045383 | 8.17:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #045383 | 2.57:1 | Fails | Lc 16.3 | Dividers and decoration only |
| #045383 text on white | 8.17:1 | AAA | Lc 87.7 | Fine for body text |
| #045383 text on black | 2.57:1 | Fails | Lc -14.4 | 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
#E0EBF5
oklch(93.5% 0.018 245.4)
-
Step 200
200
#C7DCEE
oklch(88.4% 0.034 244)
-
Step 300
300
#A0C6E6
oklch(81% 0.061 244)
-
Step 400
400
#6AA7D9
oklch(70.7% 0.097 244.5)
-
Step 500
500
#3C90CF
oklch(63.1% 0.125 244.5)
-
Step 600
600
#0B79BC
oklch(55.6% 0.135 244.5)
-
Step 700
700
#0066A0
oklch(49.2% 0.121 244)
-
Step 800
800 (this color)
#045383
oklch(42.6% 0.104 244.3)
-
Step 900
900
#124569
oklch(37.6% 0.081 244.2)
-
Step 950
950
#0D293E
oklch(27.1% 0.052 244.2)
#045383 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) | #3C5585 | 0.044 |
| Deuteranopia (no green cones) | #2A4A82 | 0.032 |
| Tritanopia (no blue cones) | #005F65 | 0.071 |
| Achromatopsia (no color) | #4F4F4F | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045383
#045383
oklch(42.6% 0.104 244.3)
- #724100
#724100
oklch(42.5% 0.096 64.1)
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 #045383, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.004
- Light Navy #155084 ΔE 0.011
- Dusk Blue #26538D ΔE 0.026
- Light Navy Blue #2E5A88 ΔE 0.037
- Cobalt #1E488F ΔE 0.041
- Twilight Blue #0A437A ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.055
- YInMn Blue #415A77 ΔE 0.059
Use #045383 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.