#5B656B
Closest named color: Slate (#516572). oklch(50% 0.016 234), rgb(91, 101, 107).
Aa
White text reads best on this color (5.96:1).
About this color
#5B656B is a medium-dark close to neutral grey. In OKLCH its lightness is 50%, its chroma 0.016. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.017 away. White text reads best on it, at 5.96:1.
| Hue family | Neutrals |
| Lightness | medium-dark (50%) |
| Chroma | close to neutral grey (0.016) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.51:1 |
| White text | 5.96:1 |
Values
| HEX | #5B656B |
| RGB | rgb(91, 101, 107) |
| HSL | hsl(203, 8%, 39%) |
| OKLCH | oklch(50% 0.016 234) |
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 #5B656B | 5.96:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #5B656B | 3.51:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #5B656B text on white | 5.96:1 | AA | Lc 79.9 | Fine for body text |
| #5B656B text on black | 3.51:1 | AA large text | Lc -22.0 | 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
#F5F5F6
oklch(97% 0.001 286.4)
-
Step 100
100
#E8EAEB
oklch(93.6% 0.003 228.8)
-
Step 200
200
#D6D9DB
oklch(88.4% 0.004 236.5)
-
Step 300
300
#BCC1C5
oklch(80.8% 0.008 241.7)
-
Step 400
400
#9AA2A7
oklch(70.7% 0.012 234.9)
-
Step 500
500
#818B92
oklch(63.1% 0.016 238.2)
-
Step 600
600
#6A757C
oklch(55.6% 0.017 235.6)
-
Step 700
700 (this color)
#5B656B
oklch(50% 0.016 234)
-
Step 800
800
#485055
oklch(42.6% 0.013 235.1)
-
Step 900
900
#3D4346
oklch(37.8% 0.009 229.1)
-
Step 950
950
#242729
oklch(27% 0.006 236.7)
#5B656B 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) | #62656B | 0.010 |
| Deuteranopia (no green cones) | #60636B | 0.009 |
| Tritanopia (no blue cones) | #576767 | 0.012 |
| Achromatopsia (no color) | #636363 | 0.016 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B656B
#5B656B
oklch(50% 0.016 234)
- #6B615B
#6B615B
oklch(50% 0.016 53.1)
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 #5B656B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.017
- Dim Gray #696969 ΔE 0.026
- Dusty Grape #545775 ΔE 0.052
- Battleship Gray #6C757D ΔE 0.057
- YInMn Blue #415A77 ΔE 0.058
- Metallic Blue #4F738E ΔE 0.058
- Denim #3B638C ΔE 0.066
- Dark Taupe #7F684E ΔE 0.071
Use #5B656B 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.