#519BDA
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.9% 0.12 246.5), rgb(81, 155, 218).
Aa
Black text reads best on this color (7.05:1).
About this color
#519BDA is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.120 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.039 away. Black text reads best on it, at 7.05:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.05:1 |
| White text | 2.97:1 |
Values
| HEX | #519BDA |
| RGB | rgb(81, 155, 218) |
| HSL | hsl(208, 65%, 59%) |
| OKLCH | oklch(66.9% 0.12 246.5) |
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 #519BDA | 2.97:1 | Fails | Lc -61.5 | Content text, not long reading |
| Black text on #519BDA | 7.05:1 | AAA | Lc 47.9 | Large or bold text, headings |
| #519BDA text on white | 2.97:1 | Fails | Lc 56.2 | Large or bold text, headings |
| #519BDA text on black | 7.05:1 | AAA | Lc -45.6 | 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 500.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C8DCEE
oklch(88.5% 0.033 245.3)
-
Step 300
300
#A3C5E5
oklch(80.9% 0.058 247)
-
Step 400
400
#6FA6D8
oklch(70.7% 0.094 247)
-
Step 500
500 (this color)
#519BDA
oklch(66.9% 0.12 246.5)
-
Step 600
600
#2078BA
oklch(55.5% 0.13 246.5)
-
Step 700
700
#1065A1
oklch(49.2% 0.121 246.5)
-
Step 800
800
#135282
oklch(42.6% 0.1 246.8)
-
Step 900
900
#184568
oklch(37.8% 0.077 245.6)
-
Step 950
950
#10283D
oklch(26.9% 0.05 247.3)
#519BDA 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) | #7F9DDD | 0.050 |
| Deuteranopia (no green cones) | #6D8FD9 | 0.039 |
| Tritanopia (no blue cones) | #00AAB1 | 0.092 |
| Achromatopsia (no color) | #959595 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #519BDA
#519BDA
oklch(66.9% 0.12 246.5)
- #C6853B
#C6853B
oklch(66.9% 0.12 66.5)
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 #519BDA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.039
- Cornflower Blue #6495ED ΔE 0.040
- Dark Sky Blue #448EE4 ΔE 0.044
- Faded Blue #658CBB ΔE 0.054
- Soft Blue #6488EA ΔE 0.062
- Greyblue #77A1B5 ΔE 0.072
- Water Blue #0E87CC ΔE 0.074
- Dodger Blue #1E90FF ΔE 0.075
Use #519BDA 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.