#519FEB
Closest named color: Cornflower Blue (#6495ED). oklch(68.7% 0.137 249.9), rgb(81, 159, 235).
Aa
Black text reads best on this color (7.50:1).
About this color
#519FEB is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.137 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.030 away. Black text reads best on it, at 7.50:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.50:1 |
| White text | 2.79:1 |
Values
| HEX | #519FEB |
| RGB | rgb(81, 159, 235) |
| HSL | hsl(210, 79%, 62%) |
| OKLCH | oklch(68.7% 0.137 249.9) |
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 #519FEB | 2.79:1 | Fails | Lc -58.8 | Large or bold text, headings |
| Black text on #519FEB | 7.50:1 | AAA | Lc 50.5 | Large or bold text, headings |
| #519FEB text on white | 2.79:1 | Fails | Lc 53.6 | Large or bold text, headings |
| #519FEB text on black | 7.50:1 | AAA | Lc -48.3 | 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
#DEECFA
oklch(93.7% 0.024 248.1)
-
Step 200
200
#C2DCF8
oklch(88.4% 0.048 250.3)
-
Step 300
300
#96C5F6
oklch(80.8% 0.086 250)
-
Step 400
400 (this color)
#519FEB
oklch(68.7% 0.137 249.9)
-
Step 500
500
#0E8CED
oklch(63% 0.175 250)
-
Step 600
600
#0076CA
oklch(55.7% 0.156 249.7)
-
Step 700
700
#0063AB
oklch(49.2% 0.138 249.7)
-
Step 800
800
#00518E
oklch(42.8% 0.121 249.9)
-
Step 900
900
#004377
oklch(37.7% 0.106 249.9)
-
Step 950
950
#032848
oklch(27.2% 0.072 249.6)
#519FEB 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) | #7EA3EE | 0.048 |
| Deuteranopia (no green cones) | #6894EA | 0.033 |
| Tritanopia (no blue cones) | #00B1BA | 0.106 |
| Achromatopsia (no color) | #9A9A9A | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #519FEB
#519FEB
oklch(68.7% 0.137 249.9)
- #CF8926
#CF8926
oklch(68.6% 0.136 69.9)
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 #519FEB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.030
- Chefchaouen Blue #4895EF ΔE 0.031
- Dark Sky Blue #448EE4 ΔE 0.049
- Soft Blue #6488EA ΔE 0.061
- Dodger Blue #1E90FF ΔE 0.064
- Periwinkle Blue #8F99FB ΔE 0.074
- Faded Blue #658CBB ΔE 0.078
- Perrywinkle #8F8CE7 ΔE 0.079
Use #519FEB 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.