#519BD8
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.8% 0.117 245.7), rgb(81, 155, 216).
Aa
Black text reads best on this color (7.02:1).
About this color
#519BD8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.117 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.042 away. Black text reads best on it, at 7.02:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.02:1 |
| White text | 2.98:1 |
Values
| HEX | #519BD8 |
| RGB | rgb(81, 155, 216) |
| HSL | hsl(207, 63%, 58%) |
| OKLCH | oklch(66.8% 0.117 245.7) |
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 #519BD8 | 2.98:1 | Fails | Lc -61.6 | Content text, not long reading |
| Black text on #519BD8 | 7.02:1 | AAA | Lc 47.8 | Large or bold text, headings |
| #519BD8 text on white | 2.98:1 | Fails | Lc 56.3 | Large or bold text, headings |
| #519BD8 text on black | 7.02:1 | AAA | Lc -45.5 | 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 500.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C9DCED
oklch(88.6% 0.031 245.1)
-
Step 300
300
#A3C5E4
oklch(80.9% 0.057 246.1)
-
Step 400
400
#6FA6D7
oklch(70.6% 0.093 246.4)
-
Step 500
500 (this color)
#519BD8
oklch(66.8% 0.117 245.7)
-
Step 600
600
#2179B9
oklch(55.7% 0.127 245.6)
-
Step 700
700
#11659F
oklch(49.1% 0.119 245.8)
-
Step 800
800
#135381
oklch(42.8% 0.098 245.5)
-
Step 900
900
#194567
oklch(37.7% 0.076 245.2)
-
Step 950
950
#10283D
oklch(26.9% 0.05 247.3)
#519BD8 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) | #809DDB | 0.051 |
| Deuteranopia (no green cones) | #6E8FD7 | 0.040 |
| Tritanopia (no blue cones) | #00AAB0 | 0.091 |
| Achromatopsia (no color) | #959595 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #519BD8
#519BD8
oklch(66.8% 0.117 245.7)
- #C5853E
#C5853E
oklch(66.8% 0.117 66.1)
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 #519BD8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.042
- Cornflower Blue #6495ED ΔE 0.043
- Dark Sky Blue #448EE4 ΔE 0.046
- Faded Blue #658CBB ΔE 0.052
- Soft Blue #6488EA ΔE 0.064
- Greyblue #77A1B5 ΔE 0.070
- Water Blue #0E87CC ΔE 0.074
- Cool Blue #4984B8 ΔE 0.074
Use #519BD8 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.