#516D9A
Closest named color: Dull Blue (#49759C). oklch(53.2% 0.079 259.6), rgb(81, 109, 154).
Aa
White text reads best on this color (5.24:1).
About this color
#516D9A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.079 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.023 away. White text reads best on it, at 5.24:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.00:1 |
| White text | 5.24:1 |
Values
| HEX | #516D9A |
| RGB | rgb(81, 109, 154) |
| HSL | hsl(217, 31%, 46%) |
| OKLCH | oklch(53.2% 0.079 259.6) |
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 #516D9A | 5.24:1 | AA | Lc -81.3 | Fine for body text |
| Black text on #516D9A | 4.00:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #516D9A text on white | 5.24:1 | AA | Lc 76.0 | Fine for body text |
| #516D9A text on black | 4.00:1 | AA large text | Lc -25.8 | 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
#D2DAE6
oklch(88.6% 0.019 258.4)
-
Step 300
300
#B3C2D8
oklch(81% 0.035 257.9)
-
Step 400
400
#8CA2C4
oklch(70.7% 0.056 259)
-
Step 500
500
#708AB6
oklch(63% 0.073 260.7)
-
Step 600
600 (this color)
#516D9A
oklch(53.2% 0.079 259.6)
-
Step 700
700
#48618A
oklch(49.1% 0.073 260)
-
Step 800
800
#3B4F70
oklch(42.6% 0.061 260.2)
-
Step 900
900
#33425B
oklch(37.7% 0.047 260.4)
-
Step 950
950
#1E2735
oklch(27.1% 0.029 259.1)
#516D9A 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) | #5C709C | 0.018 |
| Deuteranopia (no green cones) | #546999 | 0.011 |
| Tritanopia (no blue cones) | #34777D | 0.070 |
| Achromatopsia (no color) | #6C6C6C | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516D9A
#516D9A
oklch(53.2% 0.079 259.6)
- #856734
#856734
oklch(53.3% 0.078 79)
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 #516D9A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.023
- Muted Blue #3B719F ΔE 0.024
- Metallic Blue #4F738E ΔE 0.030
- Flat Blue #3C73A8 ΔE 0.030
- French Blue #436BAD ΔE 0.035
- Cerulean #457B9D ΔE 0.040
- Stormy Blue #507B9C ΔE 0.040
- Dusky Blue #475F94 ΔE 0.044
Use #516D9A 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.