#519AE4
Closest named color: Chefchaouen Blue (#4895EF). oklch(67.2% 0.133 250.7), rgb(81, 154, 228).
Aa
Black text reads best on this color (7.09:1).
About this color
#519AE4 is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.133 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.025 away. Black text reads best on it, at 7.09:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.09:1 |
| White text | 2.96:1 |
Values
| HEX | #519AE4 |
| RGB | rgb(81, 154, 228) |
| HSL | hsl(210, 73%, 61%) |
| OKLCH | oklch(67.2% 0.133 250.7) |
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 #519AE4 | 2.96:1 | Fails | Lc -61.2 | Content text, not long reading |
| Black text on #519AE4 | 7.09:1 | AAA | Lc 48.1 | Large or bold text, headings |
| #519AE4 text on white | 2.96:1 | Fails | Lc 55.9 | Large or bold text, headings |
| #519AE4 text on black | 7.09:1 | AAA | Lc -45.9 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DEEBFA
oklch(93.5% 0.025 251.9)
-
Step 200
200
#C3DCF7
oklch(88.5% 0.046 250.4)
-
Step 300
300
#99C5F5
oklch(80.9% 0.083 251)
-
Step 400
400 (this color)
#519AE4
oklch(67.2% 0.133 250.7)
-
Step 500
500
#208CEB
oklch(63.1% 0.17 250.8)
-
Step 600
600
#0075CC
oklch(55.6% 0.16 250.6)
-
Step 700
700
#0062AD
oklch(49.1% 0.142 250.8)
-
Step 800
800
#00508F
oklch(42.6% 0.123 250.8)
-
Step 900
900
#004378
oklch(37.8% 0.108 250.3)
-
Step 950
950
#052747
oklch(26.9% 0.071 251)
#519AE4 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) | #7A9EE7 | 0.045 |
| Deuteranopia (no green cones) | #6590E3 | 0.030 |
| Tritanopia (no blue cones) | #00ABB5 | 0.103 |
| Achromatopsia (no color) | #969696 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #519AE4
#519AE4
oklch(67.2% 0.133 250.7)
- #C88625
#C88625
oklch(67.2% 0.132 71.1)
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 #519AE4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.025
- Cornflower Blue #6495ED ΔE 0.027
- Dark Sky Blue #448EE4 ΔE 0.036
- Soft Blue #6488EA ΔE 0.052
- Dodger Blue #1E90FF ΔE 0.061
- Faded Blue #658CBB ΔE 0.065
- Perrywinkle #8F8CE7 ΔE 0.076
- Water Blue #0E87CC ΔE 0.076
Use #519AE4 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.