#19A9E5
Closest named color: Turquoise Blue (#06B1C4). oklch(69.3% 0.14 233.9), rgb(25, 169, 229).
Aa
Black text reads best on this color (7.84:1).
About this color
#19A9E5 is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.140 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.061 away. Black text reads best on it, at 7.84:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.140) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.84:1 |
| White text | 2.67:1 |
Values
| HEX | #19A9E5 |
| RGB | rgb(25, 169, 229) |
| HSL | hsl(198, 80%, 50%) |
| OKLCH | oklch(69.3% 0.14 233.9) |
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 #19A9E5 | 2.67:1 | Fails | Lc -56.6 | Large or bold text, headings |
| Black text on #19A9E5 | 7.84:1 | AAA | Lc 52.6 | Large or bold text, headings |
| #19A9E5 text on white | 2.67:1 | Fails | Lc 51.4 | Large or bold text, headings |
| #19A9E5 text on black | 7.84:1 | AAA | Lc -50.5 | Large or bold text, headings |
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 400.
-
Step 50
50
#EEF7FC
oklch(97.1% 0.012 231.7)
-
Step 100
100
#DAEDF8
oklch(93.5% 0.025 233)
-
Step 200
200
#BBDFF5
oklch(88.5% 0.049 234.9)
-
Step 300
300
#86CBF1
oklch(81% 0.088 233.5)
-
Step 400
400 (this color)
#19A9E5
oklch(69.3% 0.14 233.9)
-
Step 500
500
#0095CC
oklch(63.1% 0.132 233.7)
-
Step 600
600
#007DAC
oklch(55.5% 0.116 233.8)
-
Step 700
700
#006992
oklch(49.1% 0.103 234.3)
-
Step 800
800
#005678
oklch(42.7% 0.089 233.9)
-
Step 900
900
#004865
oklch(37.8% 0.079 233.7)
-
Step 950
950
#002A3E
oklch(26.9% 0.057 235.2)
#19A9E5 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) | #8BA8E8 | 0.086 |
| Deuteranopia (no green cones) | #7196E4 | 0.072 |
| Tritanopia (no blue cones) | #00B9BE | 0.084 |
| Achromatopsia (no color) | #9E9E9E | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #19A9E5
#19A9E5
oklch(69.3% 0.14 233.9)
- #DE813E
#DE813E
oklch(69.2% 0.14 53.6)
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 #19A9E5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.061
- Chefchaouen Blue #4895EF ΔE 0.061
- Deep Sky Blue #00BFFF ΔE 0.064
- Cornflower Blue #6495ED ΔE 0.069
- Dark Sky Blue #448EE4 ΔE 0.073
- Dodger Blue #1E90FF ΔE 0.085
- Greyblue #77A1B5 ΔE 0.086
- Faded Blue #658CBB ΔE 0.092
Use #19A9E5 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.