#163655
Closest named color: Prussian Blue (#1D3557). oklch(32.5% 0.067 250), rgb(22, 54, 85).
Aa
White text reads best on this color (12.40:1).
About this color
#163655 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.067 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.009 away. White text reads best on it, at 12.40:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.69:1 |
| White text | 12.40:1 |
Values
| HEX | #163655 |
| RGB | rgb(22, 54, 85) |
| HSL | hsl(210, 59%, 21%) |
| OKLCH | oklch(32.5% 0.067 250) |
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 #163655 | 12.40:1 | AAA | Lc -101.5 | Preferred for body text |
| Black text on #163655 | 1.69:1 | Fails | Lc 0.0 | Not readable |
| #163655 text on white | 12.40:1 | AAA | Lc 98.0 | Preferred for body text |
| #163655 text on black | 1.69:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEB
oklch(88.5% 0.027 249.9)
-
Step 300
300
#A9C4E0
oklch(80.9% 0.049 249.4)
-
Step 400
400
#7AA5D1
oklch(70.7% 0.08 249.6)
-
Step 500
500
#578EC5
oklch(63.2% 0.102 249.7)
-
Step 600
600
#3A77B2
oklch(55.6% 0.112 249.8)
-
Step 700
700
#2C6499
oklch(49.2% 0.104 249.7)
-
Step 800
800
#26527C
oklch(42.8% 0.085 249.5)
-
Step 900
900 (this color)
#163655
oklch(32.5% 0.067 250)
-
Step 950
950
#16283A
oklch(27.1% 0.041 249.6)
#163655 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) | #283856 | 0.023 |
| Deuteranopia (no green cones) | #1F3254 | 0.015 |
| Tritanopia (no blue cones) | #003D41 | 0.051 |
| Achromatopsia (no color) | #343434 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #163655
#163655
oklch(32.5% 0.067 250)
- #4A2D04
#4A2D04
oklch(32.6% 0.067 69.5)
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 #163655, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.009
- Dark Blue Grey #1F3B4D ΔE 0.027
- Midnight Green #073B4C ΔE 0.028
- Marine Blue #01386A ΔE 0.037
- Marine #042E60 ΔE 0.038
- Gunmetal #293241 ΔE 0.039
- Space Cadet #2B2D42 ΔE 0.044
- Onyx #343A40 ΔE 0.057
Use #163655 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.