#516FA9
Closest named color: French Blue (#436BAD). oklch(54.5% 0.098 262.7), rgb(81, 111, 169).
Aa
White text reads best on this color (5.00:1).
About this color
#516FA9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.098 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.022 away. White text reads best on it, at 5.00:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.19:1 |
| White text | 5.00:1 |
Values
| HEX | #516FA9 |
| RGB | rgb(81, 111, 169) |
| HSL | hsl(220, 35%, 49%) |
| OKLCH | oklch(54.5% 0.098 262.7) |
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 #516FA9 | 5.00:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #516FA9 | 4.19:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #516FA9 text on white | 5.00:1 | AA | Lc 74.5 | Content text, not long reading |
| #516FA9 text on black | 4.19:1 | AA large text | Lc -27.2 | Dividers and decoration only |
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 600.
-
Step 50
50
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D1DAEA
oklch(88.6% 0.024 262.1)
-
Step 300
300
#B2C1DE
oklch(80.9% 0.044 263.6)
-
Step 400
400
#89A1CD
oklch(70.7% 0.07 262.4)
-
Step 500
500
#6C89C0
oklch(63% 0.09 262.7)
-
Step 600
600 (this color)
#516FA9
oklch(54.5% 0.098 262.7)
-
Step 700
700
#456094
oklch(49.2% 0.09 262.7)
-
Step 800
800
#394E78
oklch(42.6% 0.075 263.3)
-
Step 900
900
#314161
oklch(37.7% 0.059 263.5)
-
Step 950
950
#1D2639
oklch(27% 0.038 264.5)
#516FA9 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) | #5874AB | 0.017 |
| Deuteranopia (no green cones) | #4E6CA8 | 0.010 |
| Tritanopia (no blue cones) | #277C84 | 0.088 |
| Achromatopsia (no color) | #6F6F6F | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516FA9
#516FA9
oklch(54.5% 0.098 262.7)
- #8C6A21
#8C6A21
oklch(54.5% 0.098 82.6)
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 #516FA9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.022
- Flat Blue #3C73A8 ΔE 0.024
- Muted Blue #3B719F ΔE 0.030
- Dull Blue #49759C ΔE 0.031
- Windows Blue #3778BF ΔE 0.042
- Cerulean #457B9D ΔE 0.045
- Stormy Blue #507B9C ΔE 0.045
- Mid Blue #276AB3 ΔE 0.047
Use #516FA9 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.