#519CD8
Closest named color: Chefchaouen Blue (#4895EF). oklch(67% 0.117 245), rgb(81, 156, 216).
Aa
Black text reads best on this color (7.09:1).
About this color
#519CD8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.117 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.044 away. Black text reads best on it, at 7.09:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.09:1 |
| White text | 2.95:1 |
Values
| HEX | #519CD8 |
| RGB | rgb(81, 156, 216) |
| HSL | hsl(207, 63%, 58%) |
| OKLCH | oklch(67% 0.117 245) |
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 #519CD8 | 2.95:1 | Fails | Lc -61.2 | Content text, not long reading |
| Black text on #519CD8 | 7.09:1 | AAA | Lc 48.1 | Large or bold text, headings |
| #519CD8 text on white | 2.95:1 | Fails | Lc 55.9 | Large or bold text, headings |
| #519CD8 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFECF7
oklch(93.7% 0.02 243.4)
-
Step 200
200
#C4DDF3
oklch(88.6% 0.04 244.8)
-
Step 300
300
#99C6ED
oklch(80.8% 0.073 245)
-
Step 400
400 (this color)
#519CD8
oklch(67% 0.117 245)
-
Step 500
500
#1E90DD
oklch(63.1% 0.149 245.1)
-
Step 600
600
#0079BF
oklch(55.7% 0.14 245)
-
Step 700
700
#0065A1
oklch(49% 0.124 245.1)
-
Step 800
800
#005385
oklch(42.7% 0.107 244.8)
-
Step 900
900
#004570
oklch(37.7% 0.095 244.9)
-
Step 950
950
#052942
oklch(27.1% 0.061 244.2)
#519CD8 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) | #829DDB | 0.053 |
| Deuteranopia (no green cones) | #6F90D7 | 0.041 |
| Tritanopia (no blue cones) | #00AAB1 | 0.088 |
| Achromatopsia (no color) | #969696 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #519CD8
#519CD8
oklch(67% 0.117 245)
- #C68540
#C68540
oklch(67% 0.116 65)
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 #519CD8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.044
- Cornflower Blue #6495ED ΔE 0.044
- Dark Sky Blue #448EE4 ΔE 0.049
- Faded Blue #658CBB ΔE 0.054
- Soft Blue #6488EA ΔE 0.067
- Greyblue #77A1B5 ΔE 0.068
- Water Blue #0E87CC ΔE 0.076
- Cool Blue #4984B8 ΔE 0.076
Use #519CD8 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.