#519CCF
Closest named color: Faded Blue (#658CBB). oklch(66.6% 0.107 240.7), rgb(81, 156, 207).
Aa
Black text reads best on this color (7.00:1).
About this color
#519CCF is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.107 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.047 away. Black text reads best on it, at 7.00:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 7.00:1 |
| White text | 2.99:1 |
Values
| HEX | #519CCF |
| RGB | rgb(81, 156, 207) |
| HSL | hsl(204, 57%, 56%) |
| OKLCH | oklch(66.6% 0.107 240.7) |
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 #519CCF | 2.99:1 | Fails | Lc -61.8 | Content text, not long reading |
| Black text on #519CCF | 7.00:1 | AAA | Lc 47.6 | Large or bold text, headings |
| #519CCF text on white | 2.99:1 | Fails | Lc 56.4 | Large or bold text, headings |
| #519CCF text on black | 7.00:1 | AAA | Lc -45.3 | 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 500.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF3
oklch(93.5% 0.015 241.8)
-
Step 200
200
#C9DCEB
oklch(88.5% 0.029 241.6)
-
Step 300
300
#A3C6E0
oklch(81% 0.053 240.5)
-
Step 400
400
#70A8D0
oklch(70.8% 0.083 240.5)
-
Step 500
500 (this color)
#519CCF
oklch(66.6% 0.107 240.7)
-
Step 600
600
#217BB0
oklch(55.7% 0.115 240.3)
-
Step 700
700
#116797
oklch(49.1% 0.107 240.5)
-
Step 800
800
#13547B
oklch(42.7% 0.09 240.9)
-
Step 900
900
#194663
oklch(37.8% 0.07 240.6)
-
Step 950
950
#10293A
oklch(27% 0.044 240.8)
#519CCF 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) | #859CD1 | 0.056 |
| Deuteranopia (no green cones) | #748FCE | 0.047 |
| Tritanopia (no blue cones) | #00A9AD | 0.081 |
| Achromatopsia (no color) | #959595 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #519CCF
#519CCF
oklch(66.6% 0.107 240.7)
- #C3844C
#C3844C
oklch(66.6% 0.106 61)
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 #519CCF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.047
- Chefchaouen Blue #4895EF ΔE 0.057
- Cornflower Blue #6495ED ΔE 0.057
- Dark Sky Blue #448EE4 ΔE 0.057
- Greyblue #77A1B5 ΔE 0.058
- Silver Lake Blue #778DA9 ΔE 0.067
- Dusty Blue #5A86AD ΔE 0.069
- Turquoise Blue #06B1C4 ΔE 0.071
Use #519CCF 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.