#51696F
Closest named color: Slate (#516572). oklch(50.4% 0.03 214.7), rgb(81, 105, 111).
Aa
White text reads best on this color (5.83:1).
About this color
#51696F is a medium-dark close to neutral grey. In OKLCH its lightness is 50%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.015 away. White text reads best on it, at 5.83:1.
| Hue family | Neutrals |
| Lightness | medium-dark (50%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.60:1 |
| White text | 5.83:1 |
Values
| HEX | #51696F |
| RGB | rgb(81, 105, 111) |
| HSL | hsl(192, 16%, 38%) |
| OKLCH | oklch(50.4% 0.03 214.7) |
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 #51696F | 5.83:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #51696F | 3.60:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #51696F text on white | 5.83:1 | AA | Lc 79.2 | Fine for body text |
| #51696F text on black | 3.60:1 | AA large text | Lc -22.6 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EBEB
oklch(93.7% 0.004 197.1)
-
Step 200
200
#D3DADC
oklch(88.4% 0.008 216.6)
-
Step 300
300
#B7C3C6
oklch(80.9% 0.014 214.4)
-
Step 400
400
#91A5AA
oklch(70.8% 0.024 214.5)
-
Step 500
500
#768E95
oklch(63% 0.029 217.3)
-
Step 600
600
#5E787F
oklch(55.5% 0.032 216)
-
Step 700
700 (this color)
#51696F
oklch(50.4% 0.03 214.7)
-
Step 800
800
#405357
oklch(42.8% 0.024 211.9)
-
Step 900
900
#364448
oklch(37.6% 0.019 217)
-
Step 950
950
#20282A
oklch(27% 0.012 214.5)
#51696F 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) | #64676F | 0.027 |
| Deuteranopia (no green cones) | #5F636F | 0.025 |
| Tritanopia (no blue cones) | #486C6B | 0.017 |
| Achromatopsia (no color) | #656565 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51696F
#51696F
oklch(50.4% 0.03 214.7)
- #745F59
#745F59
oklch(50.4% 0.029 36.5)
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 #51696F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.015
- Dim Gray #696969 ΔE 0.035
- Metallic Blue #4F738E ΔE 0.050
- Battleship Gray #6C757D ΔE 0.057
- YInMn Blue #415A77 ΔE 0.058
- Deep Turquoise #017374 ΔE 0.058
- Dusty Grape #545775 ΔE 0.059
- Dark Aquamarine #017371 ΔE 0.059
Use #51696F 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.