#519DC1
Closest named color: Greyblue (#77A1B5). oklch(66.2% 0.092 230.9), rgb(81, 157, 193).
Aa
Black text reads best on this color (6.94:1).
About this color
#519DC1 is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.092 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.045 away. Black text reads best on it, at 6.94:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 6.94:1 |
| White text | 3.02:1 |
Values
| HEX | #519DC1 |
| RGB | rgb(81, 157, 193) |
| HSL | hsl(199, 47%, 54%) |
| OKLCH | oklch(66.2% 0.092 230.9) |
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 #519DC1 | 3.02:1 | AA large text | Lc -62.2 | Content text, not long reading |
| Black text on #519DC1 | 6.94:1 | AA | Lc 47.2 | Large or bold text, headings |
| #519DC1 text on white | 3.02:1 | AA large text | Lc 56.8 | Large or bold text, headings |
| #519DC1 text on black | 6.94:1 | AA | Lc -45.0 | Non-text elements, placeholder text |
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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#C9DDE7
oklch(88.6% 0.025 229.2)
-
Step 300
300
#A4C7D9
oklch(81% 0.045 230.4)
-
Step 400
400
#71A9C6
oklch(70.7% 0.072 231.7)
-
Step 500
500 (this color)
#519DC1
oklch(66.2% 0.092 230.9)
-
Step 600
600
#227DA3
oklch(55.5% 0.1 231)
-
Step 700
700
#12698C
oklch(49% 0.094 231.6)
-
Step 800
800
#145671
oklch(42.6% 0.077 230.6)
-
Step 900
900
#1A475C
oklch(37.7% 0.06 231.8)
-
Step 950
950
#112A36
oklch(27.1% 0.038 231.3)
#519DC1 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) | #8B9BC3 | 0.064 |
| Deuteranopia (no green cones) | #7B8FC0 | 0.055 |
| Tritanopia (no blue cones) | #00A7A9 | 0.064 |
| Achromatopsia (no color) | #949494 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #519DC1
#519DC1
oklch(66.2% 0.092 230.9)
- #C0825E
#C0825E
oklch(66.1% 0.092 50.7)
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 #519DC1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.045
- Faded Blue #658CBB ΔE 0.048
- Cadet Blue #5F9EA0 ΔE 0.052
- Silver Lake Blue #778DA9 ΔE 0.057
- Blue Grey #758DA3 ΔE 0.060
- Turquoise Blue #06B1C4 ΔE 0.060
- Bluegrey #85A3B2 ΔE 0.064
- Dusty Blue #5A86AD ΔE 0.064
Use #519DC1 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.