#6766CC
Closest named color: Dark Periwinkle (#665FD1). oklch(56.2% 0.154 280.7), rgb(103, 102, 204).
Aa
White text reads best on this color (4.82:1).
About this color
#6766CC is a medium-dark, vivid purple. In OKLCH its lightness is 56%, its chroma 0.154 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.020 away. White text reads best on it, at 4.82:1.
| Hue family | Purples |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.154) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.34:1 |
| White text | 4.82:1 |
Values
| HEX | #6766CC |
| RGB | rgb(103, 102, 204) |
| HSL | hsl(241, 50%, 60%) |
| OKLCH | oklch(56.2% 0.154 280.7) |
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 #6766CC | 4.82:1 | AA | Lc -78.7 | Fine for body text |
| Black text on #6766CC | 4.34:1 | AA large text | Lc 30.8 | Non-text elements, placeholder text |
| #6766CC text on white | 4.82:1 | AA | Lc 73.3 | Content text, not long reading |
| #6766CC text on black | 4.34:1 | AA large text | Lc -28.4 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E9F7
oklch(93.7% 0.019 279.5)
-
Step 200
200
#D4D7F3
oklch(88.6% 0.039 280.7)
-
Step 300
300
#B8BCED
oklch(80.9% 0.069 281.1)
-
Step 400
400
#9498E4
oklch(70.7% 0.111 280.9)
-
Step 500
500
#7B7DDC
oklch(63.1% 0.141 280.6)
-
Step 600
600 (this color)
#6766CC
oklch(56.2% 0.154 280.7)
-
Step 700
700
#5452AF
oklch(49% 0.144 280.6)
-
Step 800
800
#45448D
oklch(42.7% 0.118 280.8)
-
Step 900
900
#3A3A71
oklch(37.8% 0.092 281)
-
Step 950
950
#222242
oklch(27% 0.059 281.7)
#6766CC 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) | #3676D0 | 0.062 |
| Deuteranopia (no green cones) | #2D6ECA | 0.064 |
| Tritanopia (no blue cones) | #417C8F | 0.133 |
| Achromatopsia (no color) | #727272 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6766CC
#6766CC
oklch(56.2% 0.154 280.7)
- #857600
#857600
oklch(56.2% 0.117 100.5)
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 #6766CC, closest first.
No curated palette has a color within ΔE 0.04 of #6766CC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.020
- Slate Blue #6A5ACD ΔE 0.029
- Light Indigo #6D5ACF ΔE 0.030
- Iris #6258C4 ΔE 0.037
- Royal Blue #4169E1 ΔE 0.055
- Medium Slate Blue #7B68EE ΔE 0.060
- Warm Blue #4B57DB ΔE 0.062
- Deep Lavender #8D5EB7 ΔE 0.068
Use #6766CC 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.