#163582
Closest named color: Twilight Blue (#0A437A). oklch(35.8% 0.135 264.1), rgb(22, 53, 130).
Aa
White text reads best on this color (11.25:1).
About this color
#163582 is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.135 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.042 away. White text reads best on it, at 11.25:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.86:1 |
| White text | 11.25:1 |
Values
| HEX | #163582 |
| RGB | rgb(22, 53, 130) |
| HSL | hsl(223, 71%, 30%) |
| OKLCH | oklch(35.8% 0.135 264.1) |
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 #163582 | 11.25:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #163582 | 1.86:1 | Fails | Lc 8.5 | Not readable |
| #163582 text on white | 11.25:1 | AAA | Lc 95.4 | Preferred for body text |
| #163582 text on black | 1.86:1 | Fails | Lc 0.0 | 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 900.
-
Step 50
50
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFE
oklch(93.6% 0.029 264.4)
-
Step 200
200
#C7DAFF
oklch(88.6% 0.055 263.7)
-
Step 300
300
#A1C0FF
oklch(80.8% 0.096 264.1)
-
Step 400
400
#6F9DFF
oklch(70.7% 0.152 263.9)
-
Step 500
500
#4A80FF
oklch(63.1% 0.198 264.2)
-
Step 600
600
#2B63F4
oklch(55.5% 0.225 264.2)
-
Step 700
700
#1F51D5
oklch(49.1% 0.21 264.1)
-
Step 800
800
#1B43AC
oklch(42.7% 0.174 264.2)
-
Step 900
900 (this color)
#163582
oklch(35.8% 0.135 264.1)
-
Step 950
950
#102350
oklch(27% 0.086 264.2)
#163582 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) | #004085 | 0.030 |
| Deuteranopia (no green cones) | #003681 | 0.013 |
| Tritanopia (no blue cones) | #004856 | 0.104 |
| Achromatopsia (no color) | #3B3B3B | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #163582
#163582
oklch(35.8% 0.135 264.1)
- #4F3900
#4F3900
oklch(36% 0.074 84.3)
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 #163582, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.042
- Marine Blue #01386A ΔE 0.045
- Cobalt #1E488F ΔE 0.057
- Marine #042E60 ΔE 0.065
- Royal #0C1793 ΔE 0.068
- Sapphire #2138AB ΔE 0.070
- Midnight Blue #191970 ΔE 0.074
- Prussian Blue #1D3557 ΔE 0.075
Use #163582 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.