#646583
Closest named color: Slate (#516572). oklch(51.7% 0.047 283.1), rgb(100, 101, 131).
Aa
White text reads best on this color (5.62:1).
About this color
#646583 is a medium-dark, muted purple. In OKLCH its lightness is 52%, its chroma 0.047 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.041 away. White text reads best on it, at 5.62:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.73:1 |
| White text | 5.62:1 |
Values
| HEX | #646583 |
| RGB | rgb(100, 101, 131) |
| HSL | hsl(238, 13%, 45%) |
| OKLCH | oklch(51.7% 0.047 283.1) |
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 #646583 | 5.62:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #646583 | 3.73:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #646583 text on white | 5.62:1 | AA | Lc 78.1 | Fine for body text |
| #646583 text on black | 3.73:1 | AA large text | Lc -23.6 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9E9EE
oklch(93.5% 0.007 286.3)
-
Step 200
200
#D8D8E1
oklch(88.5% 0.012 286.1)
-
Step 300
300
#BEBFCF
oklch(80.9% 0.022 283)
-
Step 400
400
#9D9EB7
oklch(70.7% 0.036 283.6)
-
Step 500
500
#8586A5
oklch(63% 0.046 283.5)
-
Step 600
600
#6F7091
oklch(55.7% 0.051 283.3)
-
Step 700
700 (this color)
#646583
oklch(51.7% 0.047 283.1)
-
Step 800
800
#4C4C64
oklch(42.6% 0.04 284.6)
-
Step 900
900
#3F4052
oklch(37.8% 0.031 282.3)
-
Step 950
950
#252530
oklch(26.9% 0.02 285)
#646583 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) | #5D6884 | 0.012 |
| Deuteranopia (no green cones) | #5C6682 | 0.012 |
| Tritanopia (no blue cones) | #5D6A6F | 0.041 |
| Achromatopsia (no color) | #676767 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646583
#646583
oklch(51.7% 0.047 283.1)
- #6D6A4A
#6D6A4A
oklch(51.8% 0.047 103.4)
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 #646583, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.041
- Metallic Blue #4F738E ΔE 0.045
- Dim Gray #696969 ΔE 0.047
- Dusty Purple #825F87 ΔE 0.051
- Dusty Grape #545775 ΔE 0.051
- Muted Purple #805B87 ΔE 0.053
- Battleship Gray #6C757D ΔE 0.054
- Dusky Blue #475F94 ΔE 0.055
Use #646583 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.