#516E85
Closest named color: Metallic Blue (#4F738E). oklch(52.5% 0.05 242.8), rgb(81, 110, 133).
Aa
White text reads best on this color (5.35:1).
About this color
#516E85 is a medium-dark, muted blue. In OKLCH its lightness is 52%, its chroma 0.050 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.017 away. White text reads best on it, at 5.35:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.91:1 |
| White text | 5.35:1 |
Values
| HEX | #516E85 |
| RGB | rgb(81, 110, 133) |
| HSL | hsl(207, 24%, 42%) |
| OKLCH | oklch(52.5% 0.05 242.8) |
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 #516E85 | 5.35:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #516E85 | 3.91:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #516E85 text on white | 5.35:1 | AA | Lc 76.7 | Fine for body text |
| #516E85 text on black | 3.91:1 | AA large text | Lc -25.1 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EAEE
oklch(93.5% 0.007 247.9)
-
Step 200
200
#D2DAE1
oklch(88.4% 0.013 244.3)
-
Step 300
300
#B5C3CE
oklch(81% 0.022 241.4)
-
Step 400
400
#8EA4B6
oklch(70.8% 0.036 242.9)
-
Step 500
500
#728DA3
oklch(63% 0.045 243.1)
-
Step 600
600 (this color)
#516E85
oklch(52.5% 0.05 242.8)
-
Step 700
700
#4A6479
oklch(49.1% 0.046 243.2)
-
Step 800
800
#3D5263
oklch(42.8% 0.038 243.2)
-
Step 900
900
#344450
oklch(37.8% 0.029 240.9)
-
Step 950
950
#1F282F
oklch(27.1% 0.018 241.7)
#516E85 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) | #646E86 | 0.026 |
| Deuteranopia (no green cones) | #5E6885 | 0.023 |
| Tritanopia (no blue cones) | #3F7475 | 0.042 |
| Achromatopsia (no color) | #6B6B6B | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516E85
#516E85
oklch(52.5% 0.05 242.8)
- #7F644C
#7F644C
oklch(52.4% 0.05 63)
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 #516E85, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.017
- Slate #516572 ΔE 0.035
- Dull Blue #49759C ΔE 0.037
- Muted Blue #3B719F ΔE 0.044
- Stormy Blue #507B9C ΔE 0.045
- Cerulean #457B9D ΔE 0.046
- Battleship Gray #6C757D ΔE 0.047
- Denim #3B638C ΔE 0.048
Use #516E85 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.