#6C64CF
Closest named color: Dark Periwinkle (#665FD1). oklch(56.4% 0.16 283.4), rgb(108, 100, 207).
Aa
White text reads best on this color (4.81:1).
About this color
#6C64CF is a medium-dark, vivid purple. In OKLCH its lightness is 56%, its chroma 0.160 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.017 away. White text reads best on it, at 4.81:1.
| Hue family | Purples |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.36:1 |
| White text | 4.81:1 |
Values
| HEX | #6C64CF |
| RGB | rgb(108, 100, 207) |
| HSL | hsl(244, 53%, 60%) |
| OKLCH | oklch(56.4% 0.16 283.4) |
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 #6C64CF | 4.81:1 | AA | Lc -78.6 | Fine for body text |
| Black text on #6C64CF | 4.36:1 | AA large text | Lc 30.9 | Non-text elements, placeholder text |
| #6C64CF text on white | 4.81:1 | AA | Lc 73.2 | Content text, not long reading |
| #6C64CF text on black | 4.36:1 | AA large text | Lc -28.5 | 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 600.
-
Step 50
50
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E8F8
oklch(93.5% 0.022 283.1)
-
Step 200
200
#D5D6F3
oklch(88.4% 0.04 284)
-
Step 300
300
#BABBEE
oklch(80.9% 0.072 283.8)
-
Step 400
400
#9797E6
oklch(70.8% 0.114 283.1)
-
Step 500
500
#7F7BDF
oklch(63.2% 0.147 283.1)
-
Step 600
600 (this color)
#6C64CF
oklch(56.4% 0.16 283.4)
-
Step 700
700
#5850B1
oklch(49.1% 0.149 283.2)
-
Step 800
800
#48428F
oklch(42.7% 0.123 283.4)
-
Step 900
900
#3C3972
oklch(37.8% 0.095 283.2)
-
Step 950
950
#232243
oklch(27.1% 0.06 283)
#6C64CF 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) | #3075D3 | 0.073 |
| Deuteranopia (no green cones) | #296ECD | 0.074 |
| Tritanopia (no blue cones) | #497B90 | 0.136 |
| Achromatopsia (no color) | #727272 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C64CF
#6C64CF
oklch(56.4% 0.16 283.4)
- #837800
#837800
oklch(56.5% 0.119 103.1)
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 #6C64CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.017
- Light Indigo #6D5ACF ΔE 0.024
- Slate Blue #6A5ACD ΔE 0.024
- Iris #6258C4 ΔE 0.037
- Medium Slate Blue #7B68EE ΔE 0.053
- Royal Blue #4169E1 ΔE 0.059
- Purpley #8756E4 ΔE 0.061
- Warm Blue #4B57DB ΔE 0.063
Use #6C64CF 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.