#19558A
Closest named color: Dusk Blue (#26538D). oklch(44% 0.106 249.5), rgb(25, 85, 138).
Aa
White text reads best on this color (7.75:1).
About this color
#19558A is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.106 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.012 away. White text reads best on it, at 7.75:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.70:1 |
| White text | 7.75:1 |
Values
| HEX | #19558A |
| RGB | rgb(25, 85, 138) |
| HSL | hsl(208, 69%, 32%) |
| OKLCH | oklch(44% 0.106 249.5) |
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 #19558A | 7.75:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #19558A | 2.70:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #19558A text on white | 7.75:1 | AAA | Lc 86.6 | Fine for body text |
| #19558A text on black | 2.70:1 | Fails | Lc -15.5 | Dividers and decoration only |
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 800.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DCF0
oklch(88.6% 0.035 248.2)
-
Step 300
300
#A3C4E8
oklch(80.8% 0.062 250.8)
-
Step 400
400
#6FA5DC
oklch(70.6% 0.099 249.8)
-
Step 500
500
#468ED3
oklch(63.2% 0.127 249.7)
-
Step 600
600
#2277C0
oklch(55.7% 0.138 249.4)
-
Step 700
700
#1363A5
oklch(49% 0.128 249.6)
-
Step 800
800 (this color)
#19558A
oklch(44% 0.106 249.5)
-
Step 900
900
#19446B
oklch(37.7% 0.082 249.1)
-
Step 950
950
#10283F
oklch(27% 0.053 249.5)
#19558A 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) | #3C588C | 0.035 |
| Deuteranopia (no green cones) | #2B4E89 | 0.023 |
| Tritanopia (no blue cones) | #006269 | 0.078 |
| Achromatopsia (no color) | #525252 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #19558A
#19558A
oklch(44% 0.106 249.5)
- #744700
#744700
oklch(44% 0.096 69.1)
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 #19558A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.012
- Light Navy #155084 ΔE 0.017
- Deep Sea Blue #015482 ΔE 0.018
- Light Navy Blue #2E5A88 ΔE 0.025
- Cobalt #1E488F ΔE 0.040
- Denim Blue #3B5B92 ΔE 0.040
- Peacock Blue #016795 ΔE 0.053
- YInMn Blue #415A77 ΔE 0.054
Use #19558A 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.