#16375A
Closest named color: Prussian Blue (#1D3557). oklch(33.1% 0.073 252.1), rgb(22, 55, 90).
Aa
White text reads best on this color (12.15:1).
About this color
#16375A is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.073 and its hue 252°. 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 12.15:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.72:1 |
| White text | 12.15:1 |
Values
| HEX | #16375A |
| RGB | rgb(22, 55, 90) |
| HSL | hsl(211, 61%, 22%) |
| OKLCH | oklch(33.1% 0.073 252.1) |
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 #16375A | 12.15:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #16375A | 1.72:1 | Fails | Lc 0.0 | Not readable |
| #16375A text on white | 12.15:1 | AAA | Lc 97.5 | Preferred for body text |
| #16375A text on black | 1.72:1 | 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
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CBDBED
oklch(88.5% 0.03 251.3)
-
Step 300
300
#A8C4E4
oklch(81% 0.055 251.9)
-
Step 400
400
#78A4D6
oklch(70.6% 0.088 252.2)
-
Step 500
500
#548DCB
oklch(63.1% 0.112 251.8)
-
Step 600
600
#3776B8
oklch(55.6% 0.122 251.8)
-
Step 700
700
#29639F
oklch(49.2% 0.114 251.9)
-
Step 800
800
#245181
oklch(42.8% 0.094 252.2)
-
Step 900
900 (this color)
#16375A
oklch(33.1% 0.073 252.1)
-
Step 950
950
#15283C
oklch(27.1% 0.045 250.9)
#16375A 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) | #27395B | 0.021 |
| Deuteranopia (no green cones) | #1D3359 | 0.013 |
| Tritanopia (no blue cones) | #003F44 | 0.056 |
| Achromatopsia (no color) | #363636 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #16375A
#16375A
oklch(33.1% 0.073 252.1)
- #4C2F00
#4C2F00
oklch(33.3% 0.071 72.4)
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 #16375A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.009
- Marine Blue #01386A ΔE 0.029
- Dark Blue Grey #1F3B4D ΔE 0.031
- Midnight Green #073B4C ΔE 0.033
- Marine #042E60 ΔE 0.036
- Gunmetal #293241 ΔE 0.047
- Space Cadet #2B2D42 ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.056
Use #16375A 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.