#516C8A
Closest named color: Metallic Blue (#4F738E). oklch(52.2% 0.057 251.6), rgb(81, 108, 138).
Aa
White text reads best on this color (5.43:1).
About this color
#516C8A is a medium-dark, muted blue. In OKLCH its lightness is 52%, its chroma 0.057 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.020 away. White text reads best on it, at 5.43:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.86:1 |
| White text | 5.43:1 |
Values
| HEX | #516C8A |
| RGB | rgb(81, 108, 138) |
| HSL | hsl(212, 26%, 43%) |
| OKLCH | oklch(52.2% 0.057 251.6) |
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 #516C8A | 5.43:1 | AA | Lc -82.4 | Fine for body text |
| Black text on #516C8A | 3.86:1 | AA large text | Lc 27.0 | Dividers and decoration only |
| #516C8A text on white | 5.43:1 | AA | Lc 77.1 | Fine for body text |
| #516C8A text on black | 3.86:1 | AA large text | Lc -24.7 | 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 700.
-
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
#D2DAE3
oklch(88.5% 0.015 251.2)
-
Step 300
300
#B4C2D2
oklch(80.8% 0.027 251.7)
-
Step 400
400
#8DA3BC
oklch(70.7% 0.044 251.8)
-
Step 500
500
#708CAB
oklch(63% 0.057 251.3)
-
Step 600
600
#587697
oklch(55.6% 0.062 251.3)
-
Step 700
700 (this color)
#516C8A
oklch(52.2% 0.057 251.6)
-
Step 800
800
#3C5169
oklch(42.8% 0.048 252.2)
-
Step 900
900
#334355
oklch(37.7% 0.037 251.8)
-
Step 950
950
#1E2732
oklch(26.9% 0.024 253.7)
#516C8A 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) | #616D8B | 0.022 |
| Deuteranopia (no green cones) | #5A6789 | 0.017 |
| Tritanopia (no blue cones) | #3D7376 | 0.050 |
| Achromatopsia (no color) | #6A6A6A | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516C8A
#516C8A
oklch(52.2% 0.057 251.6)
- #7F6444
#7F6444
oklch(52.2% 0.058 70.8)
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 #516C8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.020
- Dull Blue #49759C ΔE 0.033
- Muted Blue #3B719F ΔE 0.037
- Slate #516572 ΔE 0.039
- Denim #3B638C ΔE 0.041
- Stormy Blue #507B9C ΔE 0.046
- Cerulean #457B9D ΔE 0.046
- Dusky Blue #475F94 ΔE 0.048
Use #516C8A 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.