#6647AB
Closest named color: Bluey Purple (#6241C7). oklch(48.4% 0.154 294.2), rgb(102, 71, 171).
Aa
White text reads best on this color (6.87:1).
About this color
#6647AB is a medium-dark, vivid purple. In OKLCH its lightness is 48%, its chroma 0.154 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Purple (#6241C7), ΔE 0.047 away. White text reads best on it, at 6.87:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Bluey Purple (#6241C7) |
| Black text | 3.05:1 |
| White text | 6.87:1 |
Values
| HEX | #6647AB |
| RGB | rgb(102, 71, 171) |
| HSL | hsl(259, 41%, 47%) |
| OKLCH | oklch(48.4% 0.154 294.2) |
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 #6647AB | 6.87:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #6647AB | 3.05:1 | AA large text | Lc 20.6 | Dividers and decoration only |
| #6647AB text on white | 6.87:1 | AA | Lc 83.4 | Fine for body text |
| #6647AB text on black | 3.05:1 | AA large text | Lc -18.5 | 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
#EAE7F7
oklch(93.5% 0.022 294.6)
-
Step 200
200
#DAD4F2
oklch(88.4% 0.041 294.7)
-
Step 300
300
#C3B8ED
oklch(81% 0.075 294.2)
-
Step 400
400
#A591E3
oklch(70.6% 0.119 294.4)
-
Step 500
500
#9074DB
oklch(63.1% 0.152 294.2)
-
Step 600
600
#7B5AC9
oklch(55.6% 0.166 294.1)
-
Step 700
700 (this color)
#6647AB
oklch(48.4% 0.154 294.2)
-
Step 800
800
#553D8C
oklch(42.8% 0.126 294.5)
-
Step 900
900
#463570
oklch(37.8% 0.098 294.5)
-
Step 950
950
#291F42
oklch(27% 0.064 294.9)
#6647AB 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) | #0A5BAE | 0.103 |
| Deuteranopia (no green cones) | #1A59A9 | 0.097 |
| Tritanopia (no blue cones) | #545D72 | 0.123 |
| Achromatopsia (no color) | #5A5A5A | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6647AB
#6647AB
oklch(48.4% 0.154 294.2)
- #5E6500
#5E6500
oklch(48.4% 0.109 114.4)
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 #6647AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Purple #6241C7 ΔE 0.047
- Rebecca Purple #663399 ΔE 0.051
- Iris #6258C4 ΔE 0.053
- Blue With A Hint Of Purple #533CC6 ΔE 0.061
- Blueberry #464196 ΔE 0.066
- Slate Blue #6A5ACD ΔE 0.067
- Blurple #5539CC ΔE 0.069
- Light Indigo #6D5ACF ΔE 0.070
Use #6647AB 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.