#51626D
Closest named color: Slate (#516572). oklch(48.6% 0.027 236.5), rgb(81, 98, 109).
Aa
White text reads best on this color (6.32:1).
About this color
#51626D is a medium-dark close to neutral grey. In OKLCH its lightness is 49%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.010 away. White text reads best on it, at 6.32:1.
| Hue family | Neutrals |
| Lightness | medium-dark (49%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.31:1 |
| White text | 6.32:1 |
Values
| HEX | #51626D |
| RGB | rgb(81, 98, 109) |
| HSL | hsl(204, 15%, 37%) |
| OKLCH | oklch(48.6% 0.027 236.5) |
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 #51626D | 6.32:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #51626D | 3.31:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #51626D text on white | 6.32:1 | AA | Lc 81.5 | Fine for body text |
| #51626D text on black | 3.31:1 | AA large text | Lc -20.4 | 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
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D5DADD
oklch(88.5% 0.007 233.7)
-
Step 300
300
#B9C2C8
oklch(80.9% 0.013 236.7)
-
Step 400
400
#95A3AC
oklch(70.7% 0.021 235.9)
-
Step 500
500
#7B8C98
oklch(63.1% 0.027 238.7)
-
Step 600
600
#637683
oklch(55.5% 0.03 238)
-
Step 700
700 (this color)
#51626D
oklch(48.6% 0.027 236.5)
-
Step 800
800
#44515A
oklch(42.7% 0.022 238.3)
-
Step 900
900
#39434A
oklch(37.7% 0.018 238.5)
-
Step 950
950
#21272B
oklch(26.8% 0.011 237.1)
#51626D 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) | #5D616E | 0.018 |
| Deuteranopia (no green cones) | #595E6D | 0.016 |
| Tritanopia (no blue cones) | #496565 | 0.022 |
| Achromatopsia (no color) | #606060 | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51626D
#51626D
oklch(48.6% 0.027 236.5)
- #6C5C51
#6C5C51
oklch(48.7% 0.027 56.5)
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 #51626D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.010
- Dusty Grape #545775 ΔE 0.040
- YInMn Blue #415A77 ΔE 0.041
- Dim Gray #696969 ΔE 0.044
- Denim #3B638C ΔE 0.054
- Dusk #4E5481 ΔE 0.061
- Metallic Blue #4F738E ΔE 0.062
- Dark Aqua #05696B ΔE 0.062
Use #51626D 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.