#519BF5
Closest named color: Chefchaouen Blue (#4895EF). oklch(68.3% 0.153 254.6), rgb(81, 155, 245).
Aa
Black text reads best on this color (7.35:1).
About this color
#519BF5 is a medium-light, vivid blue. In OKLCH its lightness is 68%, its chroma 0.153 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.020 away. Black text reads best on it, at 7.35:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.35:1 |
| White text | 2.85:1 |
Values
| HEX | #519BF5 |
| RGB | rgb(81, 155, 245) |
| HSL | hsl(213, 89%, 64%) |
| OKLCH | oklch(68.3% 0.153 254.6) |
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 #519BF5 | 2.85:1 | Fails | Lc -59.7 | Large or bold text, headings |
| Black text on #519BF5 | 7.35:1 | AAA | Lc 49.7 | Large or bold text, headings |
| #519BF5 text on white | 2.85:1 | Fails | Lc 54.4 | Large or bold text, headings |
| #519BF5 text on black | 7.35:1 | AAA | Lc -47.4 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DEEBFD
oklch(93.6% 0.028 256.5)
-
Step 200
200
#C2DCFC
oklch(88.6% 0.052 253.7)
-
Step 300
300
#96C4FE
oklch(80.9% 0.096 254.6)
-
Step 400
400 (this color)
#519BF5
oklch(68.3% 0.153 254.6)
-
Step 500
500
#1888FB
oklch(63.1% 0.195 254.5)
-
Step 600
600
#0071D9
oklch(55.6% 0.181 254.6)
-
Step 700
700
#005FB8
oklch(49.1% 0.16 254.6)
-
Step 800
800
#004D98
oklch(42.6% 0.139 254.8)
-
Step 900
900
#004080
oklch(37.6% 0.123 254.7)
-
Step 950
950
#04264C
oklch(27% 0.08 254.4)
#519BF5 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) | #73A1F9 | 0.039 |
| Deuteranopia (no green cones) | #5B92F3 | 0.024 |
| Tritanopia (no blue cones) | #00B0BC | 0.121 |
| Achromatopsia (no color) | #999999 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #519BF5
#519BF5
oklch(68.3% 0.153 254.6)
- #CD8A00
#CD8A00
oklch(68.4% 0.145 74.7)
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 #519BF5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.020
- Cornflower Blue #6495ED ΔE 0.022
- Dark Sky Blue #448EE4 ΔE 0.043
- Dodger Blue #1E90FF ΔE 0.049
- Soft Blue #6488EA ΔE 0.050
- Periwinkle Blue #8F99FB ΔE 0.068
- Perrywinkle #8F8CE7 ΔE 0.074
- Lavender Blue #8B88F8 ΔE 0.076
Use #519BF5 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.