#6646A6
Closest named color: Rebecca Purple (#663399). oklch(47.9% 0.149 295.6), rgb(102, 70, 166).
Aa
White text reads best on this color (7.01:1).
About this color
#6646A6 is a medium-dark, vivid purple. In OKLCH its lightness is 48%, its chroma 0.149 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.045 away. White text reads best on it, at 7.01:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.99:1 |
| White text | 7.01:1 |
Values
| HEX | #6646A6 |
| RGB | rgb(102, 70, 166) |
| HSL | hsl(260, 41%, 46%) |
| OKLCH | oklch(47.9% 0.149 295.6) |
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 #6646A6 | 7.01:1 | AAA | Lc -89.0 | Fine for body text |
| Black text on #6646A6 | 2.99:1 | Fails | Lc 20.0 | Dividers and decoration only |
| #6646A6 text on white | 7.01:1 | AAA | Lc 84.0 | Fine for body text |
| #6646A6 text on black | 2.99:1 | Fails | Lc -18.0 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EBE7F7
oklch(93.6% 0.022 297.4)
-
Step 200
200
#DBD4F1
oklch(88.4% 0.04 296.6)
-
Step 300
300
#C4B8EB
oklch(81% 0.072 295.5)
-
Step 400
400
#A791E0
oklch(70.7% 0.115 296.1)
-
Step 500
500
#9274D8
oklch(63.1% 0.148 295.7)
-
Step 600
600
#7D5BC5
oklch(55.7% 0.159 295.6)
-
Step 700
700 (this color)
#6646A6
oklch(47.9% 0.149 295.6)
-
Step 800
800
#563D8A
oklch(42.7% 0.123 295.7)
-
Step 900
900
#46356E
oklch(37.7% 0.095 295.2)
-
Step 950
950
#291F41
oklch(26.9% 0.062 295.5)
#6646A6 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) | #135AA9 | 0.101 |
| Deuteranopia (no green cones) | #2058A4 | 0.095 |
| Tritanopia (no blue cones) | #565A6F | 0.117 |
| Achromatopsia (no color) | #595959 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6646A6
#6646A6
oklch(47.9% 0.149 295.6)
- #5B6400
#5B6400
oklch(47.9% 0.109 115.7)
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 #6646A6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.045
- Bluey Purple #6241C7 ΔE 0.055
- Iris #6258C4 ΔE 0.060
- Blueberry #464196 ΔE 0.062
- Twilight #4E518B ΔE 0.067
- Blue With A Hint Of Purple #533CC6 ΔE 0.067
- Dark Slate Blue #483D8B ΔE 0.072
- Slate Blue #6A5ACD ΔE 0.074
Use #6646A6 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.