#519DD3
Closest named color: Faded Blue (#658CBB). oklch(67% 0.11 241.9), rgb(81, 157, 211).
Aa
Black text reads best on this color (7.11:1).
About this color
#519DD3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.110 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.052 away. Black text reads best on it, at 7.11:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 7.11:1 |
| White text | 2.95:1 |
Values
| HEX | #519DD3 |
| RGB | rgb(81, 157, 211) |
| HSL | hsl(205, 60%, 57%) |
| OKLCH | oklch(67% 0.11 241.9) |
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 #519DD3 | 2.95:1 | Fails | Lc -61.2 | Content text, not long reading |
| Black text on #519DD3 | 7.11:1 | AAA | Lc 48.2 | Large or bold text, headings |
| #519DD3 text on white | 2.95:1 | Fails | Lc 55.8 | Large or bold text, headings |
| #519DD3 text on black | 7.11:1 | AAA | Lc -46.0 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF6
oklch(93.6% 0.019 240.7)
-
Step 200
200
#C4DDF1
oklch(88.5% 0.038 242.2)
-
Step 300
300
#9AC7EA
oklch(81% 0.069 242.1)
-
Step 400
400 (this color)
#519DD3
oklch(67% 0.11 241.9)
-
Step 500
500
#1D92D6
oklch(63.2% 0.14 241.5)
-
Step 600
600
#007AB9
oklch(55.5% 0.132 242.1)
-
Step 700
700
#00679C
oklch(49.2% 0.116 241.5)
-
Step 800
800
#005481
oklch(42.7% 0.101 241.9)
-
Step 900
900
#00466C
oklch(37.7% 0.089 241.5)
-
Step 950
950
#052940
oklch(26.9% 0.058 242)
#519DD3 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) | #859DD5 | 0.056 |
| Deuteranopia (no green cones) | #7390D2 | 0.046 |
| Tritanopia (no blue cones) | #00AAB0 | 0.082 |
| Achromatopsia (no color) | #969696 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #519DD3
#519DD3
oklch(67% 0.11 241.9)
- #C68549
#C68549
oklch(67.1% 0.111 61.8)
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 #519DD3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.052
- Chefchaouen Blue #4895EF ΔE 0.053
- Cornflower Blue #6495ED ΔE 0.053
- Dark Sky Blue #448EE4 ΔE 0.056
- Greyblue #77A1B5 ΔE 0.061
- Turquoise Blue #06B1C4 ΔE 0.071
- Silver Lake Blue #778DA9 ΔE 0.072
- Soft Blue #6488EA ΔE 0.074
Use #519DD3 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.