#19519E
Closest named color: Dusk Blue (#26538D). oklch(44.4% 0.138 257.7), rgb(25, 81, 158).
Aa
White text reads best on this color (7.74:1).
About this color
#19519E is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.138 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.030 away. White text reads best on it, at 7.74:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.71:1 |
| White text | 7.74:1 |
Values
| HEX | #19519E |
| RGB | rgb(25, 81, 158) |
| HSL | hsl(215, 73%, 36%) |
| OKLCH | oklch(44.4% 0.138 257.7) |
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 #19519E | 7.74:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #19519E | 2.71:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #19519E text on white | 7.74:1 | AAA | Lc 86.4 | Fine for body text |
| #19519E text on black | 2.71:1 | Fails | Lc -15.7 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C7DBF7
oklch(88.5% 0.044 256.8)
-
Step 300
300
#A0C3F5
oklch(80.9% 0.081 257.3)
-
Step 400
400
#6CA2F0
oklch(70.8% 0.129 257.6)
-
Step 500
500
#4388EB
oklch(63.1% 0.165 257.8)
-
Step 600
600
#216FD9
oklch(55.6% 0.179 257.8)
-
Step 700
700
#125CBC
oklch(49% 0.166 257.7)
-
Step 800
800 (this color)
#19519E
oklch(44.4% 0.138 257.7)
-
Step 900
900
#184079
oklch(37.7% 0.107 257.9)
-
Step 950
950
#0F2647
oklch(27% 0.068 257.7)
#19519E 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) | #2459A1 | 0.025 |
| Deuteranopia (no green cones) | #004D9C | 0.017 |
| Tritanopia (no blue cones) | #006470 | 0.106 |
| Achromatopsia (no color) | #535353 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #19519E
#19519E
oklch(44.4% 0.138 257.7)
- #704C00
#704C00
oklch(44.5% 0.093 77.5)
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 #19519E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.030
- Cobalt #1E488F ΔE 0.033
- Light Navy #155084 ΔE 0.043
- Deep Sea Blue #015482 ΔE 0.050
- Denim Blue #3B5B92 ΔE 0.050
- Light Navy Blue #2E5A88 ΔE 0.052
- Blueberry #464196 ΔE 0.059
- Twilight #4E518B ΔE 0.064
Use #19519E 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.