#516375
Closest named color: Slate (#516572). oklch(49.2% 0.036 248.6), rgb(81, 99, 117).
Aa
White text reads best on this color (6.19:1).
About this color
#516375 is a medium-dark, muted blue. In OKLCH its lightness is 49%, its chroma 0.036 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.009 away. White text reads best on it, at 6.19:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.39:1 |
| White text | 6.19:1 |
Values
| HEX | #516375 |
| RGB | rgb(81, 99, 117) |
| HSL | hsl(210, 18%, 39%) |
| OKLCH | oklch(49.2% 0.036 248.6) |
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 #516375 | 6.19:1 | AA | Lc -86.0 | Fine for body text |
| Black text on #516375 | 3.39:1 | AA large text | Lc 23.2 | Dividers and decoration only |
| #516375 text on white | 6.19:1 | AA | Lc 80.9 | Fine for body text |
| #516375 text on black | 3.39:1 | AA large text | Lc -21.0 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D4DADF
oklch(88.5% 0.009 242.9)
-
Step 300
300
#B8C2CC
oklch(80.9% 0.018 248)
-
Step 400
400
#93A3B2
oklch(70.8% 0.028 246.5)
-
Step 500
500
#798C9F
oklch(63.2% 0.036 248.4)
-
Step 600
600
#62768A
oklch(55.7% 0.039 248.5)
-
Step 700
700 (this color)
#516375
oklch(49.2% 0.036 248.6)
-
Step 800
800
#42515F
oklch(42.8% 0.03 246.7)
-
Step 900
900
#38434E
oklch(37.7% 0.024 248.5)
-
Step 950
950
#21272E
oklch(27% 0.016 252.4)
#516375 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) | #5C6376 | 0.016 |
| Deuteranopia (no green cones) | #585F75 | 0.015 |
| Tritanopia (no blue cones) | #466769 | 0.030 |
| Achromatopsia (no color) | #616161 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516375
#516375
oklch(49.2% 0.036 248.6)
- #6F5D4B
#6F5D4B
oklch(49.1% 0.036 66.8)
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 #516375, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.009
- Dusty Grape #545775 ΔE 0.036
- YInMn Blue #415A77 ΔE 0.038
- Denim #3B638C ΔE 0.044
- Dim Gray #696969 ΔE 0.047
- Metallic Blue #4F738E ΔE 0.053
- Dusk #4E5481 ΔE 0.055
- Dusky Blue #475F94 ΔE 0.056
Use #516375 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.