#516AAF
Closest named color: French Blue (#436BAD). oklch(53.7% 0.112 267.5), rgb(81, 106, 175).
Aa
White text reads best on this color (5.21:1).
About this color
#516AAF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.112 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.017 away. White text reads best on it, at 5.21:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.03:1 |
| White text | 5.21:1 |
Values
| HEX | #516AAF |
| RGB | rgb(81, 106, 175) |
| HSL | hsl(224, 37%, 50%) |
| OKLCH | oklch(53.7% 0.112 267.5) |
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 #516AAF | 5.21:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #516AAF | 4.03:1 | AA large text | Lc 28.4 | Dividers and decoration only |
| #516AAF text on white | 5.21:1 | AA | Lc 75.7 | Fine for body text |
| #516AAF text on black | 4.03:1 | AA large text | Lc -26.0 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D1D9EC
oklch(88.5% 0.028 267.5)
-
Step 300
300
#B2C0E2
oklch(80.8% 0.051 267.6)
-
Step 400
400
#8A9FD4
oklch(70.6% 0.082 267.6)
-
Step 500
500
#6E87C8
oklch(63.1% 0.103 267.4)
-
Step 600
600 (this color)
#516AAF
oklch(53.7% 0.112 267.5)
-
Step 700
700
#475D9C
oklch(49.1% 0.105 267.9)
-
Step 800
800
#3A4C7E
oklch(42.6% 0.086 267.7)
-
Step 900
900
#324066
oklch(37.8% 0.068 267.7)
-
Step 950
950
#1D263B
oklch(27.1% 0.041 266)
#516AAF 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) | #4E71B2 | 0.019 |
| Deuteranopia (no green cones) | #4369AD | 0.017 |
| Tritanopia (no blue cones) | #227984 | 0.101 |
| Achromatopsia (no color) | #6D6D6D | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516AAF
#516AAF
oklch(53.7% 0.112 267.5)
- #896900
#896900
oklch(53.8% 0.11 87.5)
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 #516AAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.017
- Flat Blue #3C73A8 ΔE 0.036
- Mid Blue #276AB3 ΔE 0.040
- Muted Blue #3B719F ΔE 0.043
- Windows Blue #3778BF ΔE 0.045
- Dull Blue #49759C ΔE 0.049
- Dusky Blue #475F94 ΔE 0.051
- Nice Blue #107AB0 ΔE 0.059
Use #516AAF 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.