#519DCC
Closest named color: Faded Blue (#658CBB). oklch(66.7% 0.103 238.1), rgb(81, 157, 204).
Aa
Black text reads best on this color (7.04:1).
About this color
#519DCC is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.103 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.048 away. Black text reads best on it, at 7.04:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 7.04:1 |
| White text | 2.98:1 |
Values
| HEX | #519DCC |
| RGB | rgb(81, 157, 204) |
| HSL | hsl(203, 55%, 56%) |
| OKLCH | oklch(66.7% 0.103 238.1) |
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 #519DCC | 2.98:1 | Fails | Lc -61.6 | Content text, not long reading |
| Black text on #519DCC | 7.04:1 | AAA | Lc 47.8 | Large or bold text, headings |
| #519DCC text on white | 2.98:1 | Fails | Lc 56.2 | Large or bold text, headings |
| #519DCC text on black | 7.04:1 | AAA | Lc -45.6 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1EBF3
oklch(93.5% 0.015 241.8)
-
Step 200
200
#C9DCEA
oklch(88.5% 0.028 239.7)
-
Step 300
300
#A3C6DE
oklch(80.9% 0.051 238.2)
-
Step 400
400
#70A8CD
oklch(70.7% 0.08 238.4)
-
Step 500
500 (this color)
#519DCC
oklch(66.7% 0.103 238.1)
-
Step 600
600
#207BAD
oklch(55.5% 0.112 238.6)
-
Step 700
700
#0F6894
oklch(49.1% 0.103 237.7)
-
Step 800
800
#135578
oklch(42.7% 0.085 237.7)
-
Step 900
900
#194661
oklch(37.7% 0.067 238.6)
-
Step 950
950
#102939
oklch(26.9% 0.043 239.2)
#519DCC 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) | #879CCE | 0.058 |
| Deuteranopia (no green cones) | #7690CB | 0.049 |
| Tritanopia (no blue cones) | #00A9AD | 0.075 |
| Achromatopsia (no color) | #959595 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #519DCC
#519DCC
oklch(66.7% 0.103 238.1)
- #C38451
#C38451
oklch(66.7% 0.103 58.7)
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 #519DCC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.048
- Greyblue #77A1B5 ΔE 0.053
- Chefchaouen Blue #4895EF ΔE 0.062
- Cornflower Blue #6495ED ΔE 0.062
- Dark Sky Blue #448EE4 ΔE 0.063
- Silver Lake Blue #778DA9 ΔE 0.065
- Turquoise Blue #06B1C4 ΔE 0.066
- Cadet Blue #5F9EA0 ΔE 0.068
Use #519DCC 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.