#6B64DB
Closest named color: Dark Periwinkle (#665FD1). oklch(57.2% 0.176 281.9), rgb(107, 100, 219).
Aa
White text reads best on this color (4.69:1).
About this color
#6B64DB is a medium-dark, vivid purple. In OKLCH its lightness is 57%, its chroma 0.176 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.021 away. White text reads best on it, at 4.69:1.
| Hue family | Purples |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.47:1 |
| White text | 4.69:1 |
Values
| HEX | #6B64DB |
| RGB | rgb(107, 100, 219) |
| HSL | hsl(244, 62%, 63%) |
| OKLCH | oklch(57.2% 0.176 281.9) |
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 #6B64DB | 4.69:1 | AA | Lc -77.8 | Fine for body text |
| Black text on #6B64DB | 4.47:1 | AA large text | Lc 31.8 | Non-text elements, placeholder text |
| #6B64DB text on white | 4.69:1 | AA | Lc 72.3 | Content text, not long reading |
| #6B64DB text on black | 4.47:1 | AA large text | Lc -29.4 | 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 600.
-
Step 50
50
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E7E8F9
oklch(93.5% 0.023 283.3)
-
Step 200
200
#D4D6F6
oklch(88.5% 0.044 282.6)
-
Step 300
300
#B8BBF3
oklch(80.9% 0.079 282.1)
-
Step 400
400
#9496ED
oklch(70.7% 0.126 281.7)
-
Step 500
500
#7C79E8
oklch(63.1% 0.163 281.9)
-
Step 600
600 (this color)
#6B64DB
oklch(57.2% 0.176 281.9)
-
Step 700
700
#564EB9
oklch(49.2% 0.163 281.9)
-
Step 800
800
#464096
oklch(42.7% 0.136 282.1)
-
Step 900
900
#3A3877
oklch(37.8% 0.105 281.6)
-
Step 950
950
#222146
oklch(27% 0.067 282.1)
#6B64DB 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) | #1C78DF | 0.082 |
| Deuteranopia (no green cones) | #076FD8 | 0.085 |
| Tritanopia (no blue cones) | #3E7F96 | 0.151 |
| Achromatopsia (no color) | #747474 | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B64DB
#6B64DB
oklch(57.2% 0.176 281.9)
- #877900
#877900
oklch(57.1% 0.119 101.3)
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 #6B64DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.021
- Light Indigo #6D5ACF ΔE 0.028
- Slate Blue #6A5ACD ΔE 0.031
- Medium Slate Blue #7B68EE ΔE 0.039
- Iris #6258C4 ΔE 0.047
- Royal Blue #4169E1 ΔE 0.052
- Purpley #8756E4 ΔE 0.053
- Warm Blue #4B57DB ΔE 0.058
Use #6B64DB 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.