#51635E
Closest named color: Slate (#516572). oklch(48.3% 0.023 176.6), rgb(81, 99, 94).
Aa
White text reads best on this color (6.37:1).
About this color
#51635E is a medium-dark close to neutral grey. In OKLCH its lightness is 48%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.031 away. White text reads best on it, at 6.37:1.
| Hue family | Neutrals |
| Lightness | medium-dark (48%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.29:1 |
| White text | 6.37:1 |
Values
| HEX | #51635E |
| RGB | rgb(81, 99, 94) |
| HSL | hsl(163, 10%, 35%) |
| OKLCH | oklch(48.3% 0.023 176.6) |
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 #51635E | 6.37:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #51635E | 3.29:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #51635E text on white | 6.37:1 | AA | Lc 81.7 | Fine for body text |
| #51635E text on black | 3.29:1 | AA large text | Lc -20.2 | 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
#E8EAEA
oklch(93.6% 0.002 197.1)
-
Step 200
200
#D5DAD9
oklch(88.4% 0.006 183)
-
Step 300
300
#B9C3C0
oklch(80.9% 0.012 176.2)
-
Step 400
400
#95A4A0
oklch(70.6% 0.018 178)
-
Step 500
500
#7B8E89
oklch(63% 0.023 177.9)
-
Step 600
600
#647873
oklch(55.5% 0.025 178.5)
-
Step 700
700 (this color)
#51635E
oklch(48.3% 0.023 176.6)
-
Step 800
800
#44534F
oklch(42.8% 0.02 177.4)
-
Step 900
900
#394441
oklch(37.6% 0.015 177.2)
-
Step 950
950
#222826
oklch(27% 0.009 173.5)
#51635E 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) | #62615E | 0.025 |
| Deuteranopia (no green cones) | #5E5E5E | 0.023 |
| Tritanopia (no blue cones) | #4D6461 | 0.006 |
| Achromatopsia (no color) | #5F5F5F | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51635E
#51635E
oklch(48.3% 0.023 176.6)
- #6A595F
#6A595F
oklch(48.3% 0.024 354.8)
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 #51635E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.031
- Dim Gray #696969 ΔE 0.044
- Dark Green Blue #1F6357 ΔE 0.055
- Dark Aqua #05696B ΔE 0.059
- YInMn Blue #415A77 ΔE 0.060
- Dusty Grape #545775 ΔE 0.061
- Dark Aquamarine #017371 ΔE 0.067
- Deep Turquoise #017374 ΔE 0.067
Use #51635E 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.