#6B6BB9
Closest named color: Dark Periwinkle (#665FD1). oklch(56.3% 0.119 281.9), rgb(107, 107, 185).
Aa
White text reads best on this color (4.74:1).
About this color
#6B6BB9 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 56%, its chroma 0.119 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.053 away. White text reads best on it, at 4.74:1.
| Hue family | Purples |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.42:1 |
| White text | 4.74:1 |
Values
| HEX | #6B6BB9 |
| RGB | rgb(107, 107, 185) |
| HSL | hsl(240, 36%, 57%) |
| OKLCH | oklch(56.3% 0.119 281.9) |
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 #6B6BB9 | 4.74:1 | AA | Lc -78.3 | Fine for body text |
| Black text on #6B6BB9 | 4.42:1 | AA large text | Lc 31.3 | Non-text elements, placeholder text |
| #6B6BB9 text on white | 4.74:1 | AA | Lc 72.8 | Content text, not long reading |
| #6B6BB9 text on black | 4.42:1 | AA large text | Lc -28.9 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E8E9F4
oklch(93.6% 0.015 281.9)
-
Step 200
200
#D5D7ED
oklch(88.4% 0.03 281.6)
-
Step 300
300
#BABDE3
oklch(80.9% 0.054 281.6)
-
Step 400
400
#989AD5
oklch(70.7% 0.086 282.5)
-
Step 500
500
#7F81CA
oklch(63.2% 0.109 281.6)
-
Step 600
600 (this color)
#6B6BB9
oklch(56.3% 0.119 281.9)
-
Step 700
700
#58579D
oklch(49.1% 0.11 282.2)
-
Step 800
800
#48477F
oklch(42.6% 0.091 282.6)
-
Step 900
900
#3C3C66
oklch(37.7% 0.071 282.4)
-
Step 950
950
#23233C
oklch(26.9% 0.046 282.9)
#6B6BB9 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) | #4F76BC | 0.043 |
| Deuteranopia (no green cones) | #4B70B7 | 0.042 |
| Tritanopia (no blue cones) | #537B89 | 0.104 |
| Achromatopsia (no color) | #737373 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B6BB9
#6B6BB9
oklch(56.3% 0.119 281.9)
- #847700
#847700
oklch(56.4% 0.118 101.8)
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 #6B6BB9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.053
- French Blue #436BAD ΔE 0.056
- Slate Blue #6A5ACD ΔE 0.057
- Iris #6258C4 ΔE 0.057
- Light Indigo #6D5ACF ΔE 0.058
- Deep Lavender #8D5EB7 ΔE 0.060
- Windows Blue #3778BF ΔE 0.063
- Dark Lavender #856798 ΔE 0.063
Use #6B6BB9 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.