#045582
Closest named color: Deep Sea Blue (#015482). oklch(43.1% 0.101 242.1), rgb(4, 85, 130).
Aa
White text reads best on this color (7.99:1).
About this color
#045582 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.101 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.003 away. White text reads best on it, at 7.99:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.62:1 |
| White text | 7.99:1 |
Values
| HEX | #045582 |
| RGB | rgb(4, 85, 130) |
| HSL | hsl(201, 94%, 26%) |
| OKLCH | oklch(43.1% 0.101 242.1) |
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 #045582 | 7.99:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #045582 | 2.62:1 | Fails | Lc 16.8 | Dividers and decoration only |
| #045582 text on white | 7.99:1 | AAA | Lc 87.2 | Fine for body text |
| #045582 text on black | 2.62:1 | Fails | Lc -14.9 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF5
oklch(93.7% 0.018 240)
-
Step 200
200
#C7DCED
oklch(88.4% 0.033 242.4)
-
Step 300
300
#A0C6E4
oklch(80.9% 0.059 242.2)
-
Step 400
400
#69A8D6
oklch(70.7% 0.094 241.5)
-
Step 500
500
#3B91CC
oklch(63.1% 0.121 242.3)
-
Step 600
600
#067AB8
oklch(55.5% 0.13 242)
-
Step 700
700
#00679D
oklch(49.2% 0.117 242)
-
Step 800
800 (this color)
#045582
oklch(43.1% 0.101 242.1)
-
Step 900
900
#124667
oklch(37.8% 0.077 241.6)
-
Step 950
950
#0D293D
oklch(27% 0.05 242.9)
#045582 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) | #3F5684 | 0.046 |
| Deuteranopia (no green cones) | #2E4C81 | 0.034 |
| Tritanopia (no blue cones) | #006065 | 0.068 |
| Achromatopsia (no color) | #515151 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045582
#045582
oklch(43.1% 0.101 242.1)
- #764100
#764100
oklch(43.1% 0.1 61.6)
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 #045582, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.003
- Light Navy #155084 ΔE 0.016
- Dusk Blue #26538D ΔE 0.028
- Light Navy Blue #2E5A88 ΔE 0.033
- Cobalt #1E488F ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.053
- Twilight Blue #0A437A ΔE 0.054
- YInMn Blue #415A77 ΔE 0.055
Use #045582 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.