#516C9B
Closest named color: Muted Blue (#3B719F). oklch(53% 0.081 261.1), rgb(81, 108, 155).
Aa
White text reads best on this color (5.29:1).
About this color
#516C9B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.081 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.025 away. White text reads best on it, at 5.29:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.96:1 |
| White text | 5.29:1 |
Values
| HEX | #516C9B |
| RGB | rgb(81, 108, 155) |
| HSL | hsl(218, 31%, 46%) |
| OKLCH | oklch(53% 0.081 261.1) |
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 #516C9B | 5.29:1 | AA | Lc -81.6 | Fine for body text |
| Black text on #516C9B | 3.96:1 | AA large text | Lc 27.8 | Dividers and decoration only |
| #516C9B text on white | 5.29:1 | AA | Lc 76.2 | Fine for body text |
| #516C9B text on black | 3.96:1 | AA large text | Lc -25.5 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D2DAE7
oklch(88.6% 0.02 260.2)
-
Step 300
300
#B4C1D9
oklch(80.9% 0.037 262.8)
-
Step 400
400
#8CA1C6
oklch(70.6% 0.059 261.7)
-
Step 500
500
#708AB7
oklch(63.1% 0.075 261.2)
-
Step 600
600 (this color)
#516C9B
oklch(53% 0.081 261.1)
-
Step 700
700
#48618C
oklch(49.2% 0.076 260.9)
-
Step 800
800
#3B4F71
oklch(42.6% 0.062 260.7)
-
Step 900
900
#33425C
oklch(37.8% 0.049 261.1)
-
Step 950
950
#1E2736
oklch(27.1% 0.031 260.5)
#516C9B 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) | #5A6F9D | 0.015 |
| Deuteranopia (no green cones) | #52689A | 0.011 |
| Tritanopia (no blue cones) | #33767D | 0.072 |
| Achromatopsia (no color) | #6B6B6B | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516C9B
#516C9B
oklch(53% 0.081 261.1)
- #846730
#846730
oklch(53.1% 0.082 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 #516C9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.025
- Dull Blue #49759C ΔE 0.026
- Flat Blue #3C73A8 ΔE 0.030
- French Blue #436BAD ΔE 0.033
- Metallic Blue #4F738E ΔE 0.033
- Dusky Blue #475F94 ΔE 0.041
- Cerulean #457B9D ΔE 0.043
- Stormy Blue #507B9C ΔE 0.044
Use #516C9B 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.