#516E9A
Closest named color: Dull Blue (#49759C). oklch(53.4% 0.078 258.5), rgb(81, 110, 154).
Aa
White text reads best on this color (5.18:1).
About this color
#516E9A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.078 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.021 away. White text reads best on it, at 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.04:1 |
| White text | 5.18:1 |
Values
| HEX | #516E9A |
| RGB | rgb(81, 110, 154) |
| HSL | hsl(216, 31%, 46%) |
| OKLCH | oklch(53.4% 0.078 258.5) |
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 #516E9A | 5.18:1 | AA | Lc -81.0 | Fine for body text |
| Black text on #516E9A | 4.04:1 | AA large text | Lc 28.4 | Dividers and decoration only |
| #516E9A text on white | 5.18:1 | AA | Lc 75.6 | Fine for body text |
| #516E9A text on black | 4.04:1 | AA large text | Lc -26.1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D1DAE6
oklch(88.5% 0.019 255.5)
-
Step 300
300
#B3C2D8
oklch(81% 0.035 257.9)
-
Step 400
400
#8CA2C4
oklch(70.7% 0.056 259)
-
Step 500
500
#6F8BB5
oklch(63.1% 0.071 258.3)
-
Step 600
600 (this color)
#516E9A
oklch(53.4% 0.078 258.5)
-
Step 700
700
#47628A
oklch(49.2% 0.072 258)
-
Step 800
800
#3B5070
oklch(42.8% 0.06 258.6)
-
Step 900
900
#32425A
oklch(37.6% 0.046 258.3)
-
Step 950
950
#1E2735
oklch(27.1% 0.029 259.1)
#516E9A 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) | #5D719C | 0.019 |
| Deuteranopia (no green cones) | #556A99 | 0.012 |
| Tritanopia (no blue cones) | #33787D | 0.070 |
| Achromatopsia (no color) | #6D6D6D | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516E9A
#516E9A
oklch(53.4% 0.078 258.5)
- #866736
#866736
oklch(53.4% 0.077 77.3)
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 #516E9A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.021
- Muted Blue #3B719F ΔE 0.024
- Metallic Blue #4F738E ΔE 0.028
- Flat Blue #3C73A8 ΔE 0.029
- French Blue #436BAD ΔE 0.037
- Stormy Blue #507B9C ΔE 0.038
- Cerulean #457B9D ΔE 0.038
- Dusky Blue #475F94 ΔE 0.046
Use #516E9A 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.