#163556
Closest named color: Prussian Blue (#1D3557). oklch(32.3% 0.07 252), rgb(22, 53, 86).
Aa
White text reads best on this color (12.51:1).
About this color
#163556 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.070 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.008 away. White text reads best on it, at 12.51:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.67:1 |
| White text | 12.51:1 |
Values
| HEX | #163556 |
| RGB | rgb(22, 53, 86) |
| HSL | hsl(211, 59%, 21%) |
| OKLCH | oklch(32.3% 0.07 252) |
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 #163556 | 12.51:1 | AAA | Lc -101.7 | Preferred for body text |
| Black text on #163556 | 1.67:1 | Fails | Lc 0.0 | Not readable |
| #163556 text on white | 12.51:1 | AAA | Lc 98.2 | Preferred for body text |
| #163556 text on black | 1.67:1 | 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 950.
-
Step 50
50
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C4DCF7
oklch(88.5% 0.045 251.4)
-
Step 300
300
#9AC5F5
oklch(81% 0.082 251.6)
-
Step 400
400
#5FA4F0
oklch(70.6% 0.132 252.2)
-
Step 500
500
#298BEB
oklch(63% 0.169 252.2)
-
Step 600
600
#0074D0
oklch(55.6% 0.166 251.9)
-
Step 700
700
#0061B0
oklch(49% 0.147 252)
-
Step 800
800
#004F92
oklch(42.6% 0.129 252.3)
-
Step 900
900
#044279
oklch(37.7% 0.11 252)
-
Step 950
950 (this color)
#163556
oklch(32.3% 0.07 252)
#163556 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) | #263757 | 0.021 |
| Deuteranopia (no green cones) | #1D3155 | 0.013 |
| Tritanopia (no blue cones) | #003D41 | 0.055 |
| Achromatopsia (no color) | #343434 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #163556
#163556
oklch(32.3% 0.07 252)
- #492D00
#492D00
oklch(32.4% 0.069 72.5)
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 #163556, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.008
- Dark Blue Grey #1F3B4D ΔE 0.031
- Midnight Green #073B4C ΔE 0.031
- Marine #042E60 ΔE 0.035
- Marine Blue #01386A ΔE 0.036
- Gunmetal #293241 ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.044
- Onyx #343A40 ΔE 0.060
Use #163556 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.