#536B68
Closest named color: Slate (#516572). oklch(50.8% 0.029 186.9), rgb(83, 107, 104).
Aa
White text reads best on this color (5.72:1).
About this color
#536B68 is a medium-dark close to neutral grey. In OKLCH its lightness is 51%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.029 away. White text reads best on it, at 5.72:1.
| Hue family | Neutrals |
| Lightness | medium-dark (51%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.67:1 |
| White text | 5.72:1 |
Values
| HEX | #536B68 |
| RGB | rgb(83, 107, 104) |
| HSL | hsl(173, 13%, 37%) |
| OKLCH | oklch(50.8% 0.029 186.9) |
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 #536B68 | 5.72:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #536B68 | 3.67:1 | AA large text | Lc 25.5 | Dividers and decoration only |
| #536B68 text on white | 5.72:1 | AA | Lc 78.6 | Fine for body text |
| #536B68 text on black | 3.67:1 | AA large text | Lc -23.2 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E7EBEA
oklch(93.7% 0.004 179.7)
-
Step 200
200
#D4DBDA
oklch(88.6% 0.008 186.9)
-
Step 300
300
#B7C4C2
oklch(81% 0.015 185.9)
-
Step 400
400
#92A5A3
oklch(70.7% 0.022 189)
-
Step 500
500
#778F8C
oklch(63% 0.028 187.2)
-
Step 600
600
#5F7976
oklch(55.5% 0.031 187.6)
-
Step 700
700 (this color)
#536B68
oklch(50.8% 0.029 186.9)
-
Step 800
800
#405351
oklch(42.6% 0.024 188.4)
-
Step 900
900
#374543
oklch(37.7% 0.018 185.8)
-
Step 950
950
#202827
oklch(26.9% 0.011 187.3)
#536B68 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) | #686868 | 0.030 |
| Deuteranopia (no green cones) | #646568 | 0.029 |
| Tritanopia (no blue cones) | #4C6C6A | 0.009 |
| Achromatopsia (no color) | #666666 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #536B68
#536B68
oklch(50.8% 0.029 186.9)
- #755F62
#755F62
oklch(50.8% 0.029 8.9)
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 #536B68, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.029
- Dim Gray #696969 ΔE 0.032
- Battleship Gray #6C757D ΔE 0.056
- Deep Turquoise #017374 ΔE 0.057
- Dark Aquamarine #017371 ΔE 0.058
- Metallic Blue #4F738E ΔE 0.058
- Deep Aqua #08787F ΔE 0.062
- Dark Aqua #05696B ΔE 0.062
Use #536B68 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.