#516FA5
Closest named color: Flat Blue (#3C73A8). oklch(54.2% 0.092 261.6), rgb(81, 111, 165).
Aa
White text reads best on this color (5.03:1).
About this color
#516FA5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.092 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Flat Blue (#3C73A8), ΔE 0.023 away. White text reads best on it, at 5.03:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Flat Blue (#3C73A8) |
| Black text | 4.16:1 |
| White text | 5.03:1 |
Values
| HEX | #516FA5 |
| RGB | rgb(81, 111, 165) |
| HSL | hsl(219, 34%, 48%) |
| OKLCH | oklch(54.2% 0.092 261.6) |
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 #516FA5 | 5.03:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #516FA5 | 4.16:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #516FA5 text on white | 5.03:1 | AA | Lc 74.7 | Content text, not long reading |
| #516FA5 text on black | 4.16:1 | AA large text | Lc -27.0 | 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
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D1DAE9
oklch(88.6% 0.023 260.7)
-
Step 300
300
#B2C1DC
oklch(80.8% 0.042 262.3)
-
Step 400
400
#8AA1CB
oklch(70.7% 0.067 262.3)
-
Step 500
500
#6D8ABD
oklch(63.2% 0.084 261.4)
-
Step 600
600 (this color)
#516FA5
oklch(54.2% 0.092 261.6)
-
Step 700
700
#456091
oklch(49% 0.086 261.7)
-
Step 800
800
#394F76
oklch(42.8% 0.071 261.4)
-
Step 900
900
#31425F
oklch(37.8% 0.055 260.8)
-
Step 950
950
#1D2738
oklch(27.2% 0.035 260.8)
#516FA5 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) | #5A73A7 | 0.017 |
| Deuteranopia (no green cones) | #516BA4 | 0.011 |
| Tritanopia (no blue cones) | #2B7B82 | 0.083 |
| Achromatopsia (no color) | #6F6F6F | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516FA5
#516FA5
oklch(54.2% 0.092 261.6)
- #8A6928
#8A6928
oklch(54.1% 0.092 81.4)
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 #516FA5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Blue #3C73A8 ΔE 0.023
- French Blue #436BAD ΔE 0.025
- Muted Blue #3B719F ΔE 0.026
- Dull Blue #49759C ΔE 0.027
- Cerulean #457B9D ΔE 0.041
- Stormy Blue #507B9C ΔE 0.041
- Metallic Blue #4F738E ΔE 0.042
- Windows Blue #3778BF ΔE 0.046
Use #516FA5 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.