#51615D
Closest named color: Slate (#516572). oklch(47.8% 0.021 178.6), rgb(81, 97, 93).
Aa
White text reads best on this color (6.52:1).
About this color
#51615D is a medium-dark close to neutral grey. In OKLCH its lightness is 48%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.032 away. White text reads best on it, at 6.52:1.
| Hue family | Neutrals |
| Lightness | medium-dark (48%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.21:1 |
| White text | 6.52:1 |
Values
| HEX | #51615D |
| RGB | rgb(81, 97, 93) |
| HSL | hsl(165, 9%, 35%) |
| OKLCH | oklch(47.8% 0.021 178.6) |
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 #51615D | 6.52:1 | AA | Lc -87.4 | Fine for body text |
| Black text on #51615D | 3.21:1 | AA large text | Lc 21.7 | Dividers and decoration only |
| #51615D text on white | 6.52:1 | AA | Lc 82.4 | Fine for body text |
| #51615D text on black | 3.21:1 | AA large text | Lc -19.6 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E8EAEA
oklch(93.6% 0.002 197.1)
-
Step 200
200
#D5DAD9
oklch(88.4% 0.006 183)
-
Step 300
300
#BAC3C0
oklch(80.9% 0.011 174.2)
-
Step 400
400
#97A4A1
oklch(70.7% 0.015 180.5)
-
Step 500
500
#7D8E89
oklch(63.2% 0.021 176)
-
Step 600
600
#667873
oklch(55.6% 0.023 176.8)
-
Step 700
700 (this color)
#51615D
oklch(47.8% 0.021 178.6)
-
Step 800
800
#45524F
oklch(42.6% 0.017 180)
-
Step 900
900
#3A4442
oklch(37.7% 0.014 182.2)
-
Step 950
950
#222826
oklch(27% 0.009 173.5)
#51615D 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) | #605F5D | 0.023 |
| Deuteranopia (no green cones) | #5C5D5D | 0.019 |
| Tritanopia (no blue cones) | #4D6260 | 0.007 |
| Achromatopsia (no color) | #5E5E5E | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51615D
#51615D
oklch(47.8% 0.021 178.6)
- #67585D
#67585D
oklch(47.7% 0.021 355.8)
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 #51615D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.032
- Dim Gray #696969 ΔE 0.048
- Dark Green Blue #1F6357 ΔE 0.055
- YInMn Blue #415A77 ΔE 0.057
- Dusty Grape #545775 ΔE 0.058
- Dark Aqua #05696B ΔE 0.060
- Petrol #005F6A ΔE 0.068
- Dark Aquamarine #017371 ΔE 0.070
Use #51615D 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.