#6B5FDB
Closest named color: Dark Periwinkle (#665FD1). oklch(56.3% 0.183 283.2), rgb(107, 95, 219).
Aa
White text reads best on this color (4.90:1).
About this color
#6B5FDB is a medium-dark, vivid purple. In OKLCH its lightness is 56%, its chroma 0.183 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 4.90:1.
| Hue family | Purples |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.183) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.28:1 |
| White text | 4.90:1 |
Values
| HEX | #6B5FDB |
| RGB | rgb(107, 95, 219) |
| HSL | hsl(246, 63%, 62%) |
| OKLCH | oklch(56.3% 0.183 283.2) |
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 #6B5FDB | 4.90:1 | AA | Lc -79.0 | Fine for body text |
| Black text on #6B5FDB | 4.28:1 | AA large text | Lc 30.5 | Non-text elements, placeholder text |
| #6B5FDB text on white | 4.90:1 | AA | Lc 73.6 | Content text, not long reading |
| #6B5FDB text on black | 4.28:1 | AA large text | Lc -28.1 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E7E8FA
oklch(93.6% 0.024 283.4)
-
Step 200
200
#D4D6F7
oklch(88.5% 0.045 282.7)
-
Step 300
300
#B9BAF5
oklch(80.9% 0.083 283.6)
-
Step 400
400
#9695F0
oklch(70.8% 0.131 283)
-
Step 500
500
#7E77EA
oklch(63% 0.168 283.2)
-
Step 600
600 (this color)
#6B5FDB
oklch(56.3% 0.183 283.2)
-
Step 700
700
#584BBC
oklch(49% 0.171 283.3)
-
Step 800
800
#483F98
oklch(42.8% 0.14 283.3)
-
Step 900
900
#3B3679
oklch(37.6% 0.11 283.1)
-
Step 950
950
#232047
oklch(27% 0.07 284.1)
#6B5FDB 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) | #0075DF | 0.091 |
| Deuteranopia (no green cones) | #006DD8 | 0.089 |
| Tritanopia (no blue cones) | #3F7B94 | 0.154 |
| Achromatopsia (no color) | #717171 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B5FDB
#6B5FDB
oklch(56.3% 0.183 283.2)
- #827700
#827700
oklch(56.2% 0.118 103.1)
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 #6B5FDB, 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 0.021
- Slate Blue #6A5ACD ΔE 0.024
- Iris #6258C4 ΔE 0.041
- Medium Slate Blue #7B68EE ΔE 0.044
- Purpley #8756E4 ΔE 0.049
- Warm Blue #4B57DB ΔE 0.051
- Royal Blue #4169E1 ΔE 0.055
Use #6B5FDB 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.