#505E5B
Closest named color: Slate (#516572). oklch(46.9% 0.018 181.1), rgb(80, 94, 91).
Aa
White text reads best on this color (6.78:1).
About this color
#505E5B is a medium-dark close to neutral grey. In OKLCH its lightness is 47%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.037 away. White text reads best on it, at 6.78:1.
| Hue family | Neutrals |
| Lightness | medium-dark (47%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.09:1 |
| White text | 6.78:1 |
Values
| HEX | #505E5B |
| RGB | rgb(80, 94, 91) |
| HSL | hsl(167, 8%, 34%) |
| OKLCH | oklch(46.9% 0.018 181.1) |
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 #505E5B | 6.78:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #505E5B | 3.09:1 | AA large text | Lc 20.6 | Dividers and decoration only |
| #505E5B text on white | 6.78:1 | AA | Lc 83.4 | Fine for body text |
| #505E5B text on black | 3.09:1 | AA large text | Lc -18.5 | 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
#F5F6F5
oklch(97.2% 0.002 145.6)
-
Step 100
100
#E8EAEA
oklch(93.6% 0.002 197.1)
-
Step 200
200
#D6DAD9
oklch(88.5% 0.005 179.7)
-
Step 300
300
#BBC2C1
oklch(80.8% 0.008 186.8)
-
Step 400
400
#98A4A1
oklch(70.8% 0.014 179.3)
-
Step 500
500
#7E8D8A
oklch(63% 0.018 182.4)
-
Step 600
600
#687774
oklch(55.6% 0.018 182.3)
-
Step 700
700 (this color)
#505E5B
oklch(46.9% 0.018 181.1)
-
Step 800
800
#46524F
oklch(42.7% 0.016 178.8)
-
Step 900
900
#3B4442
oklch(37.8% 0.012 180.8)
-
Step 950
950
#232827
oklch(27.1% 0.007 182.4)
#505E5B 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) | #5D5C5B | 0.020 |
| Deuteranopia (no green cones) | #5A5A5B | 0.018 |
| Tritanopia (no blue cones) | #4D5F5D | 0.005 |
| Achromatopsia (no color) | #5B5B5B | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #505E5B
#505E5B
oklch(46.9% 0.018 181.1)
- #64575A
#64575A
oklch(47% 0.018 2.2)
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 #505E5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.037
- YInMn Blue #415A77 ΔE 0.054
- Dark Green Blue #1F6357 ΔE 0.054
- Dusty Grape #545775 ΔE 0.054
- Dim Gray #696969 ΔE 0.055
- Dark Aqua #05696B ΔE 0.062
- Petrol #005F6A ΔE 0.066
- Dark Slate Gray #2F4F4F ΔE 0.069
Use #505E5B 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.