#6641AA
Closest named color: Rebecca Purple (#663399). oklch(47.3% 0.161 295.9), rgb(102, 65, 170).
Aa
White text reads best on this color (7.23:1).
About this color
#6641AA is a medium-dark, vivid purple. In OKLCH its lightness is 47%, its chroma 0.161 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 0.039 away. White text reads best on it, at 7.23:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.161) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.90:1 |
| White text | 7.23:1 |
Values
| HEX | #6641AA |
| RGB | rgb(102, 65, 170) |
| HSL | hsl(261, 45%, 46%) |
| OKLCH | oklch(47.3% 0.161 295.9) |
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 #6641AA | 7.23:1 | AAA | Lc -89.6 | Fine for body text |
| Black text on #6641AA | 2.90:1 | Fails | Lc 19.3 | Dividers and decoration only |
| #6641AA text on white | 7.23:1 | AAA | Lc 84.7 | Fine for body text |
| #6641AA text on black | 2.90:1 | Fails | Lc -17.3 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F8
oklch(93.6% 0.023 296.7)
-
Step 200
200
#DBD4F3
oklch(88.5% 0.043 295.9)
-
Step 300
300
#C4B7EE
oklch(80.9% 0.078 295.4)
-
Step 400
400
#A790E5
oklch(70.7% 0.124 295.5)
-
Step 500
500
#9371DE
oklch(63% 0.16 295.8)
-
Step 600
600
#7E57CB
oklch(55.5% 0.173 295.8)
-
Step 700
700 (this color)
#6641AA
oklch(47.3% 0.161 295.9)
-
Step 800
800
#573B8E
oklch(42.8% 0.132 295.9)
-
Step 900
900
#473372
oklch(37.7% 0.105 295.6)
-
Step 950
950
#2A1E43
oklch(27% 0.067 296.6)
#6641AA 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) | #0058AD | 0.110 |
| Deuteranopia (no green cones) | #0955A8 | 0.108 |
| Tritanopia (no blue cones) | #55586F | 0.126 |
| Achromatopsia (no color) | #575757 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6641AA
#6641AA
oklch(47.3% 0.161 295.9)
- #596200
#596200
oklch(47.2% 0.108 115.8)
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 #6641AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.039
- Bluey Purple #6241C7 ΔE 0.047
- Blue With A Hint Of Purple #533CC6 ΔE 0.058
- Blueberry #464196 ΔE 0.063
- Iris #6258C4 ΔE 0.064
- Blurple #5539CC ΔE 0.066
- Dark Slate Blue #483D8B ΔE 0.073
- Twilight #4E518B ΔE 0.077
Use #6641AA 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.