#19355C
Closest named color: Prussian Blue (#1D3557). oklch(32.9% 0.077 257.1), rgb(25, 53, 92).
Aa
White text reads best on this color (12.31:1).
About this color
#19355C is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.077 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.010 away. White text reads best on it, at 12.31:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.70:1 |
| White text | 12.31:1 |
Values
| HEX | #19355C |
| RGB | rgb(25, 53, 92) |
| HSL | hsl(215, 57%, 23%) |
| OKLCH | oklch(32.9% 0.077 257.1) |
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 #19355C | 12.31:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #19355C | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #19355C text on white | 12.31:1 | AAA | Lc 97.8 | Preferred for body text |
| #19355C text on black | 1.70:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CCDAEF
oklch(88.4% 0.033 258.4)
-
Step 300
300
#A9C3E6
oklch(81% 0.057 255.9)
-
Step 400
400
#7BA3DA
oklch(70.8% 0.092 256.5)
-
Step 500
500
#598BD0
oklch(63.2% 0.118 256.7)
-
Step 600
600
#3E73BD
oklch(55.5% 0.129 257.1)
-
Step 700
700
#3060A3
oklch(49% 0.12 257.2)
-
Step 800
800
#294F84
oklch(42.7% 0.099 257.1)
-
Step 900
900 (this color)
#19355C
oklch(32.9% 0.077 257.1)
-
Step 950
950
#16273E
oklch(27% 0.049 256.3)
#19355C 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) | #23385E | 0.016 |
| Deuteranopia (no green cones) | #19325B | 0.009 |
| Tritanopia (no blue cones) | #003E44 | 0.061 |
| Achromatopsia (no color) | #353535 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #19355C
#19355C
oklch(32.9% 0.077 257.1)
- #493000
#493000
oklch(33.1% 0.069 77.3)
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 #19355C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.010
- Marine Blue #01386A ΔE 0.027
- Marine #042E60 ΔE 0.031
- Dark Blue Grey #1F3B4D ΔE 0.038
- Midnight Green #073B4C ΔE 0.041
- Gunmetal #293241 ΔE 0.050
- Space Cadet #2B2D42 ΔE 0.051
- Twilight Blue #0A437A ΔE 0.061
Use #19355C 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.