#19729F
Closest named color: Ocean Blue (#03719C). oklch(52.4% 0.106 237), rgb(25, 114, 159).
Aa
White text reads best on this color (5.31:1).
About this color
#19729F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.106 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.009 away. White text reads best on it, at 5.31:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 3.94:1 |
| White text | 5.31:1 |
Values
| HEX | #19729F |
| RGB | rgb(25, 114, 159) |
| HSL | hsl(200, 73%, 36%) |
| OKLCH | oklch(52.4% 0.106 237) |
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 #19729F | 5.31:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #19729F | 3.94:1 | AA large text | Lc 28.0 | Dividers and decoration only |
| #19729F text on white | 5.31:1 | AA | Lc 76.0 | Fine for body text |
| #19729F text on black | 3.94:1 | AA large text | Lc -25.7 | 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 600.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CADCE9
oklch(88.5% 0.026 239.1)
-
Step 300
300
#A4C6DC
oklch(80.9% 0.048 236.6)
-
Step 400
400
#72A8CA
oklch(70.7% 0.076 236.9)
-
Step 500
500
#4992BD
oklch(63.1% 0.098 237)
-
Step 600
600 (this color)
#19729F
oklch(52.4% 0.106 237)
-
Step 700
700
#176891
oklch(49.1% 0.098 236.8)
-
Step 800
800
#175576
oklch(42.7% 0.082 237)
-
Step 900
900
#1B465F
oklch(37.6% 0.064 237.4)
-
Step 950
950
#112938
oklch(26.9% 0.041 238.3)
#19729F 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) | #5C72A1 | 0.060 |
| Deuteranopia (no green cones) | #4A669E | 0.048 |
| Tritanopia (no blue cones) | #007E82 | 0.068 |
| Achromatopsia (no color) | #6B6B6B | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #19729F
#19729F
oklch(52.4% 0.106 237)
- #975824
#975824
oklch(52.3% 0.106 56.7)
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 #19729F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.009
- Sea Blue #047495 ΔE 0.020
- Muted Blue #3B719F ΔE 0.022
- Flat Blue #3C73A8 ΔE 0.029
- Nice Blue #107AB0 ΔE 0.031
- Peacock Blue #016795 ΔE 0.036
- Dull Blue #49759C ΔE 0.039
- Ocean #017B92 ΔE 0.039
Use #19729F 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.