#516F9F
Closest named color: Dull Blue (#49759C). oklch(53.9% 0.084 259.5), rgb(81, 111, 159).
Aa
White text reads best on this color (5.09:1).
About this color
#516F9F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.084 and its hue 260°. 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 5.09:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.12:1 |
| White text | 5.09:1 |
Values
| HEX | #516F9F |
| RGB | rgb(81, 111, 159) |
| HSL | hsl(217, 33%, 47%) |
| OKLCH | oklch(53.9% 0.084 259.5) |
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 #516F9F | 5.09:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #516F9F | 4.12:1 | AA large text | Lc 29.0 | Dividers and decoration only |
| #516F9F text on white | 5.09:1 | AA | Lc 75.1 | Fine for body text |
| #516F9F text on black | 4.12:1 | AA large text | Lc -26.7 | 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
#D1DAE7
oklch(88.5% 0.02 257.5)
-
Step 300
300
#B3C2D9
oklch(81% 0.036 258.9)
-
Step 400
400
#8BA2C7
oklch(70.8% 0.06 259.8)
-
Step 500
500
#6E8AB8
oklch(63% 0.077 260.1)
-
Step 600
600 (this color)
#516F9F
oklch(53.9% 0.084 259.5)
-
Step 700
700
#46618D
oklch(49.1% 0.078 259.9)
-
Step 800
800
#3A4F72
oklch(42.6% 0.064 260.3)
-
Step 900
900
#32425C
oklch(37.7% 0.049 259.9)
-
Step 950
950
#1D2736
oklch(27% 0.031 258.3)
#516F9F 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) | #5D72A1 | 0.019 |
| Deuteranopia (no green cones) | #546B9E | 0.011 |
| Tritanopia (no blue cones) | #307980 | 0.073 |
| Achromatopsia (no color) | #6E6E6E | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516F9F
#516F9F
oklch(53.9% 0.084 259.5)
- #886931
#886931
oklch(54% 0.083 80.2)
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 #516F9F, 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 0.023
- Flat Blue #3C73A8 ΔE 0.025
- French Blue #436BAD ΔE 0.032
- Metallic Blue #4F738E ΔE 0.033
- Stormy Blue #507B9C ΔE 0.037
- Cerulean #457B9D ΔE 0.037
- Dusky Blue #475F94 ΔE 0.050
Use #516F9F 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.