#6E66DE
Closest named color: Dark Periwinkle (#665FD1). oklch(58% 0.177 282.4), rgb(110, 102, 222).
Aa
Black text reads best on this color (4.61:1).
About this color
#6E66DE is a medium-dark, vivid purple. In OKLCH its lightness is 58%, its chroma 0.177 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.029 away. Black text reads best on it, at 4.61:1.
| Hue family | Purples |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.177) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.61:1 |
| White text | 4.54:1 |
Values
| HEX | #6E66DE |
| RGB | rgb(110, 102, 222) |
| HSL | hsl(244, 65%, 64%) |
| OKLCH | oklch(58% 0.177 282.4) |
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 #6E66DE | 4.54:1 | AA | Lc -76.8 | Fine for body text |
| Black text on #6E66DE | 4.61:1 | AA | Lc 32.8 | Non-text elements, placeholder text |
| #6E66DE text on white | 4.54:1 | AA | Lc 71.3 | Content text, not long reading |
| #6E66DE text on black | 4.61:1 | AA | Lc -30.4 | Non-text elements, placeholder text |
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
#9595EE
oklch(70.6% 0.129 282.6)
-
Step 500
500
#7D79E8
oklch(63.2% 0.163 282.3)
-
Step 600
600 (this color)
#6E66DE
oklch(58% 0.177 282.4)
-
Step 700
700
#574DB9
oklch(49.1% 0.164 282.7)
-
Step 800
800
#474096
oklch(42.7% 0.136 282.6)
-
Step 900
900
#3B3777
oklch(37.6% 0.106 282.9)
-
Step 950
950
#222146
oklch(27% 0.067 282.1)
#6E66DE 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) | #1F7AE2 | 0.083 |
| Deuteranopia (no green cones) | #1072DB | 0.085 |
| Tritanopia (no blue cones) | #428198 | 0.152 |
| Achromatopsia (no color) | #767676 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6E66DE
#6E66DE
oklch(58% 0.177 282.4)
- #897C00
#897C00
oklch(58% 0.121 102.1)
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 #6E66DE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.029
- Medium Slate Blue #7B68EE ΔE 0.032
- Light Indigo #6D5ACF ΔE 0.035
- Slate Blue #6A5ACD ΔE 0.038
- Purpley #8756E4 ΔE 0.051
- Iris #6258C4 ΔE 0.055
- Cornflower #6A79F7 ΔE 0.055
- Royal Blue #4169E1 ΔE 0.056
Use #6E66DE 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.