#516583
Closest named color: Slate (#516572). oklch(50.3% 0.054 258.3), rgb(81, 101, 131).
Aa
White text reads best on this color (5.93:1).
About this color
#516583 is a medium-dark, muted blue. In OKLCH its lightness is 50%, its chroma 0.054 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.028 away. White text reads best on it, at 5.93:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.53:1 |
| White text | 5.93:1 |
Values
| HEX | #516583 |
| RGB | rgb(81, 101, 131) |
| HSL | hsl(216, 24%, 42%) |
| OKLCH | oklch(50.3% 0.054 258.3) |
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 #516583 | 5.93:1 | AA | Lc -84.9 | Fine for body text |
| Black text on #516583 | 3.53:1 | AA large text | Lc 24.4 | Dividers and decoration only |
| #516583 text on white | 5.93:1 | AA | Lc 79.6 | Fine for body text |
| #516583 text on black | 3.53:1 | AA large text | Lc -22.2 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D3DAE3
oklch(88.6% 0.015 254.6)
-
Step 300
300
#B7C1D2
oklch(80.8% 0.026 261.1)
-
Step 400
400
#91A2BB
oklch(70.7% 0.041 257.9)
-
Step 500
500
#768BAA
oklch(63.2% 0.053 258)
-
Step 600
600
#5E7496
oklch(55.5% 0.059 259)
-
Step 700
700 (this color)
#516583
oklch(50.3% 0.054 258.3)
-
Step 800
800
#405068
oklch(42.8% 0.045 258.3)
-
Step 900
900
#364254
oklch(37.6% 0.035 258.3)
-
Step 950
950
#202731
oklch(27% 0.021 257.3)
#516583 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) | #5A6784 | 0.014 |
| Deuteranopia (no green cones) | #556282 | 0.010 |
| Tritanopia (no blue cones) | #416B6F | 0.047 |
| Achromatopsia (no color) | #646464 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #516583
#516583
oklch(50.3% 0.054 258.3)
- #756040
#756040
oklch(50.2% 0.054 77.6)
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 #516583, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.028
- Denim #3B638C ΔE 0.031
- Dusky Blue #475F94 ΔE 0.039
- Metallic Blue #4F738E ΔE 0.040
- Dusty Grape #545775 ΔE 0.041
- YInMn Blue #415A77 ΔE 0.043
- Dusk #4E5481 ΔE 0.051
- Muted Blue #3B719F ΔE 0.051
Use #516583 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.