#6766BB
Closest named color: Dark Periwinkle (#665FD1). oklch(55.1% 0.13 281.8), rgb(103, 102, 187).
Aa
White text reads best on this color (5.00:1).
About this color
#6766BB is a medium-dark, moderately saturated purple. In OKLCH its lightness is 55%, its chroma 0.130 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.041 away. White text reads best on it, at 5.00:1.
| Hue family | Purples |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.19:1 |
| White text | 5.00:1 |
Values
| HEX | #6766BB |
| RGB | rgb(103, 102, 187) |
| HSL | hsl(241, 38%, 57%) |
| OKLCH | oklch(55.1% 0.13 281.8) |
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 #6766BB | 5.00:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #6766BB | 4.19:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #6766BB text on white | 5.00:1 | AA | Lc 74.5 | Content text, not long reading |
| #6766BB text on black | 4.19:1 | AA large text | Lc -27.2 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E8E9F5
oklch(93.7% 0.016 282.3)
-
Step 200
200
#D5D7EF
oklch(88.5% 0.033 281.9)
-
Step 300
300
#BABDE6
oklch(81% 0.058 281.7)
-
Step 400
400
#979ADA
oklch(70.8% 0.093 281.7)
-
Step 500
500
#7E7FD0
oklch(63% 0.121 281.8)
-
Step 600
600 (this color)
#6766BB
oklch(55.1% 0.13 281.8)
-
Step 700
700
#5756A3
oklch(49.2% 0.121 281.6)
-
Step 800
800
#474684
oklch(42.6% 0.101 282)
-
Step 900
900
#3B3B6A
oklch(37.6% 0.079 281.9)
-
Step 950
950
#23233E
oklch(27% 0.05 282.6)
#6766BB 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) | #4572BE | 0.049 |
| Deuteranopia (no green cones) | #406CB9 | 0.049 |
| Tritanopia (no blue cones) | #4B7887 | 0.114 |
| Achromatopsia (no color) | #6F6F6F | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6766BB
#6766BB
oklch(55.1% 0.13 281.8)
- #807300
#807300
oklch(55% 0.115 101.5)
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 #6766BB, closest first.
No curated palette has a color within ΔE 0.04 of #6766BB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.041
- Iris #6258C4 ΔE 0.041
- Slate Blue #6A5ACD ΔE 0.043
- Light Indigo #6D5ACF ΔE 0.046
- French Blue #436BAD ΔE 0.053
- Deep Lavender #8D5EB7 ΔE 0.062
- Windows Blue #3778BF ΔE 0.066
- Flat Blue #3C73A8 ΔE 0.070
Use #6766BB 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.