#646680
Closest named color: Slate (#516572). oklch(51.8% 0.041 281.4), rgb(100, 102, 128).
Aa
White text reads best on this color (5.59:1).
About this color
#646680 is a medium-dark, muted purple. In OKLCH its lightness is 52%, its chroma 0.041 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.037 away. White text reads best on it, at 5.59:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.75:1 |
| White text | 5.59:1 |
Values
| HEX | #646680 |
| RGB | rgb(100, 102, 128) |
| HSL | hsl(236, 12%, 45%) |
| OKLCH | oklch(51.8% 0.041 281.4) |
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 #646680 | 5.59:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #646680 | 3.75:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #646680 text on white | 5.59:1 | AA | Lc 78.0 | Fine for body text |
| #646680 text on black | 3.75:1 | AA large text | Lc -23.8 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9E9EE
oklch(93.5% 0.007 286.3)
-
Step 200
200
#D8D8E0
oklch(88.5% 0.011 286.2)
-
Step 300
300
#BEBFCE
oklch(80.8% 0.021 282.9)
-
Step 400
400
#9D9FB4
oklch(70.8% 0.031 281.3)
-
Step 500
500
#8587A2
oklch(63.1% 0.04 281.8)
-
Step 600
600
#6E718D
oklch(55.6% 0.043 280.1)
-
Step 700
700 (this color)
#646680
oklch(51.8% 0.041 281.4)
-
Step 800
800
#4B4D62
oklch(42.7% 0.035 280.5)
-
Step 900
900
#3F4050
oklch(37.7% 0.027 282.2)
-
Step 950
950
#25262F
oklch(27.1% 0.017 280.2)
#646680 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) | #5F6981 | 0.010 |
| Deuteranopia (no green cones) | #5E677F | 0.009 |
| Tritanopia (no blue cones) | #5E6A6F | 0.035 |
| Achromatopsia (no color) | #686868 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646680
#646680
oklch(51.8% 0.041 281.4)
- #6D6A4E
#6D6A4E
oklch(51.9% 0.042 102.6)
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 #646680, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.037
- Dim Gray #696969 ΔE 0.041
- Metallic Blue #4F738E ΔE 0.043
- Battleship Gray #6C757D ΔE 0.049
- Dusty Grape #545775 ΔE 0.053
- Dusty Purple #825F87 ΔE 0.054
- Grey Purple #826D8C ΔE 0.056
- Muted Purple #805B87 ΔE 0.056
Use #646680 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.