#646383
Closest named color: Slate (#516572). oklch(51.3% 0.05 285.9), rgb(100, 99, 131).
Aa
White text reads best on this color (5.74:1).
About this color
#646383 is a medium-dark, muted purple. In OKLCH its lightness is 51%, its chroma 0.050 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.042 away. White text reads best on it, at 5.74:1.
| Hue family | Purples |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.65:1 |
| White text | 5.74:1 |
Values
| HEX | #646383 |
| RGB | rgb(100, 99, 131) |
| HSL | hsl(242, 14%, 45%) |
| OKLCH | oklch(51.3% 0.05 285.9) |
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 #646383 | 5.74:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #646383 | 3.65:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #646383 text on white | 5.74:1 | AA | Lc 78.8 | Fine for body text |
| #646383 text on black | 3.65:1 | AA large text | Lc -23.0 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9EE
oklch(93.5% 0.007 286.3)
-
Step 200
200
#D8D8E2
oklch(88.5% 0.014 286.1)
-
Step 300
300
#BFBFD0
oklch(81% 0.024 285.9)
-
Step 400
400
#9E9EB8
oklch(70.8% 0.038 285.4)
-
Step 500
500
#8686A7
oklch(63.2% 0.049 284.9)
-
Step 600
600
#706F92
oklch(55.6% 0.054 285.8)
-
Step 700
700 (this color)
#646383
oklch(51.3% 0.05 285.9)
-
Step 800
800
#4D4C65
oklch(42.8% 0.041 286.4)
-
Step 900
900
#403F52
oklch(37.6% 0.032 287.2)
-
Step 950
950
#252530
oklch(26.9% 0.02 285)
#646383 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) | #5B6784 | 0.016 |
| Deuteranopia (no green cones) | #5A6582 | 0.016 |
| Tritanopia (no blue cones) | #5D686E | 0.043 |
| Achromatopsia (no color) | #666666 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646383
#646383
oklch(51.3% 0.05 285.9)
- #6A6947
#6A6947
oklch(51.3% 0.05 106.6)
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 #646383, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.042
- Dusty Grape #545775 ΔE 0.047
- Metallic Blue #4F738E ΔE 0.050
- Dusty Purple #825F87 ΔE 0.050
- Muted Purple #805B87 ΔE 0.050
- Dim Gray #696969 ΔE 0.051
- Dusky Blue #475F94 ΔE 0.052
- Denim #3B638C ΔE 0.055
Use #646383 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.