#515D6D
Closest named color: Slate (#516572). oklch(47.4% 0.03 255.7), rgb(81, 93, 109).
Aa
White text reads best on this color (6.69:1).
About this color
#515D6D is a medium-dark close to neutral grey. In OKLCH its lightness is 47%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.023 away. White text reads best on it, at 6.69:1.
| Hue family | Neutrals |
| Lightness | medium-dark (47%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.13:1 |
| White text | 6.69:1 |
Values
| HEX | #515D6D |
| RGB | rgb(81, 93, 109) |
| HSL | hsl(214, 15%, 37%) |
| OKLCH | oklch(47.4% 0.03 255.7) |
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 #515D6D | 6.69:1 | AA | Lc -88.1 | Fine for body text |
| Black text on #515D6D | 3.13:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #515D6D text on white | 6.69:1 | AA | Lc 83.1 | Fine for body text |
| #515D6D text on black | 3.13:1 | AA large text | Lc -18.9 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAED
oklch(93.6% 0.005 258.3)
-
Step 200
200
#D6D9DE
oklch(88.4% 0.008 260.7)
-
Step 300
300
#BBC1CA
oklch(80.9% 0.014 258.4)
-
Step 400
400
#97A2AF
oklch(70.8% 0.023 252.6)
-
Step 500
500
#7E8B9C
oklch(63.2% 0.03 255.2)
-
Step 600
600
#677486
oklch(55.5% 0.032 256.5)
-
Step 700
700 (this color)
#515D6D
oklch(47.4% 0.03 255.7)
-
Step 800
800
#46505D
oklch(42.7% 0.025 255.1)
-
Step 900
900
#3B424C
oklch(37.7% 0.02 257.3)
-
Step 950
950
#23272C
oklch(27.1% 0.011 254)
#515D6D 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) | #575D6E | 0.009 |
| Deuteranopia (no green cones) | #545B6D | 0.007 |
| Tritanopia (no blue cones) | #4A6062 | 0.025 |
| Achromatopsia (no color) | #5C5C5C | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515D6D
#515D6D
oklch(47.4% 0.03 255.7)
- #665A49
#665A49
oklch(47.4% 0.03 76.4)
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 #515D6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.023
- Dusty Grape #545775 ΔE 0.026
- YInMn Blue #415A77 ΔE 0.030
- Dusk #4E5481 ΔE 0.049
- Denim #3B638C ΔE 0.053
- Dim Gray #696969 ΔE 0.055
- Light Navy Blue #2E5A88 ΔE 0.062
- Dusky Blue #475F94 ΔE 0.063
Use #515D6D 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.