#516D9D
Closest named color: Muted Blue (#3B719F). oklch(53.4% 0.083 260.8), rgb(81, 109, 157).
Aa
White text reads best on this color (5.21:1).
About this color
#516D9D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.083 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.024 away. White text reads best on it, at 5.21:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 4.02:1 |
| White text | 5.21:1 |
Values
| HEX | #516D9D |
| RGB | rgb(81, 109, 157) |
| HSL | hsl(218, 32%, 47%) |
| OKLCH | oklch(53.4% 0.083 260.8) |
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 #516D9D | 5.21:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #516D9D | 4.02:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #516D9D text on white | 5.21:1 | AA | Lc 75.8 | Fine for body text |
| #516D9D text on black | 4.02:1 | AA large text | Lc -25.9 | 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
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D1DAE7
oklch(88.5% 0.02 257.5)
-
Step 300
300
#B3C1D9
oklch(80.8% 0.037 261.3)
-
Step 400
400
#8CA2C6
oklch(70.8% 0.058 260.2)
-
Step 500
500
#6F8AB8
oklch(63.1% 0.076 260.9)
-
Step 600
600 (this color)
#516D9D
oklch(53.4% 0.083 260.8)
-
Step 700
700
#47618D
oklch(49.2% 0.078 260.6)
-
Step 800
800
#3B4F72
oklch(42.7% 0.064 261.2)
-
Step 900
900
#32425C
oklch(37.7% 0.049 259.9)
-
Step 950
950
#1E2736
oklch(27.1% 0.031 260.5)
#516D9D 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) | #5B709F | 0.016 |
| Deuteranopia (no green cones) | #52699C | 0.011 |
| Tritanopia (no blue cones) | #31777E | 0.074 |
| Achromatopsia (no color) | #6C6C6C | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516D9D
#516D9D
oklch(53.4% 0.083 260.8)
- #866730
#866730
oklch(53.3% 0.083 79.7)
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 #516D9D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.024
- Dull Blue #49759C ΔE 0.024
- Flat Blue #3C73A8 ΔE 0.028
- French Blue #436BAD ΔE 0.031
- Metallic Blue #4F738E ΔE 0.034
- Cerulean #457B9D ΔE 0.041
- Stormy Blue #507B9C ΔE 0.042
- Dusky Blue #475F94 ΔE 0.044
Use #516D9D 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.