#516C8F
Closest named color: Metallic Blue (#4F738E). oklch(52.4% 0.064 255.2), rgb(81, 108, 143).
Aa
White text reads best on this color (5.39:1).
About this color
#516C8F is a medium-dark, muted blue. In OKLCH its lightness is 52%, its chroma 0.064 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.021 away. White text reads best on it, at 5.39:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.89:1 |
| White text | 5.39:1 |
Values
| HEX | #516C8F |
| RGB | rgb(81, 108, 143) |
| HSL | hsl(214, 28%, 44%) |
| OKLCH | oklch(52.4% 0.064 255.2) |
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 #516C8F | 5.39:1 | AA | Lc -82.2 | Fine for body text |
| Black text on #516C8F | 3.89:1 | AA large text | Lc 27.2 | Dividers and decoration only |
| #516C8F text on white | 5.39:1 | AA | Lc 76.8 | Fine for body text |
| #516C8F text on black | 3.89:1 | AA large text | Lc -24.9 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D2DAE4
oklch(88.5% 0.016 253.9)
-
Step 300
300
#B5C2D3
oklch(80.9% 0.028 255.1)
-
Step 400
400
#8EA2BE
oklch(70.6% 0.047 256.8)
-
Step 500
500
#728CAD
oklch(63.2% 0.058 254.6)
-
Step 600
600 (this color)
#516C8F
oklch(52.4% 0.064 255.2)
-
Step 700
700
#4A6282
oklch(49% 0.059 255.8)
-
Step 800
800
#3D506A
oklch(42.7% 0.05 256.4)
-
Step 900
900
#344356
oklch(37.8% 0.038 254.6)
-
Step 950
950
#1E2732
oklch(26.9% 0.024 253.7)
#516C8F 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) | #5F6E91 | 0.020 |
| Deuteranopia (no green cones) | #58678E | 0.016 |
| Tritanopia (no blue cones) | #3A7478 | 0.057 |
| Achromatopsia (no color) | #6A6A6A | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516C8F
#516C8F
oklch(52.4% 0.064 255.2)
- #80653F
#80653F
oklch(52.5% 0.064 75.1)
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 #516C8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.021
- Dull Blue #49759C ΔE 0.029
- Muted Blue #3B719F ΔE 0.032
- Denim #3B638C ΔE 0.040
- Flat Blue #3C73A8 ΔE 0.043
- Cerulean #457B9D ΔE 0.044
- Stormy Blue #507B9C ΔE 0.044
- Dusky Blue #475F94 ΔE 0.045
Use #516C8F 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.