#045370
Closest named color: Deep Sea Blue (#015482). oklch(41.5% 0.082 231), rgb(4, 83, 112).
Aa
White text reads best on this color (8.47:1).
About this color
#045370 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.082 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.030 away. White text reads best on it, at 8.47:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.47:1 |
| White text | 8.47:1 |
Values
| HEX | #045370 |
| RGB | rgb(4, 83, 112) |
| HSL | hsl(196, 93%, 23%) |
| OKLCH | oklch(41.5% 0.082 231) |
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 #045370 | 8.47:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #045370 | 2.47:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #045370 text on white | 8.47:1 | AAA | Lc 88.7 | Fine for body text |
| #045370 text on black | 2.47:1 | Fails | Lc -13.5 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C8DDE8
oklch(88.5% 0.027 230.4)
-
Step 300
300
#A2C7DA
oklch(80.9% 0.048 230.4)
-
Step 400
400
#6DAAC8
oklch(70.8% 0.077 230.6)
-
Step 500
500
#4194BA
oklch(63.1% 0.098 231)
-
Step 600
600
#157EA6
oklch(55.7% 0.106 230.6)
-
Step 700
700
#006A8E
oklch(49.1% 0.099 230.6)
-
Step 800
800 (this color)
#045370
oklch(41.5% 0.082 231)
-
Step 900
900
#15475D
oklch(37.6% 0.064 231.2)
-
Step 950
950
#0F2A37
oklch(27.1% 0.041 231.9)
#045370 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) | #445271 | 0.054 |
| Deuteranopia (no green cones) | #374970 | 0.046 |
| Tritanopia (no blue cones) | #005B5D | 0.047 |
| Achromatopsia (no color) | #4D4D4D | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045370
#045370
oklch(41.5% 0.082 231)
- #6E3D1E
#6E3D1E
oklch(41.4% 0.082 51)
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 #045370, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.030
- Light Navy #155084 ΔE 0.038
- Deep Teal #00555A ΔE 0.041
- Petrol #005F6A ΔE 0.043
- Dark Grey Blue #29465B ΔE 0.048
- Light Navy Blue #2E5A88 ΔE 0.054
- Dusk Blue #26538D ΔE 0.055
- Charcoal #264653 ΔE 0.055
Use #045370 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.