#6B57F1
Closest named color: Medium Slate Blue (#7B68EE). oklch(56.7% 0.221 282.7), rgb(107, 87, 241).
Aa
White text reads best on this color (4.93:1).
About this color
#6B57F1 is a medium-dark, vivid purple. In OKLCH its lightness is 57%, its chroma 0.221 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Slate Blue (#7B68EE), ΔE 0.047 away. White text reads best on it, at 4.93:1.
| Hue family | Purples |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.221) |
| Temperature | cool |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 4.25:1 |
| White text | 4.93:1 |
Values
| HEX | #6B57F1 |
| RGB | rgb(107, 87, 241) |
| HSL | hsl(248, 85%, 64%) |
| OKLCH | oklch(56.7% 0.221 282.7) |
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 #6B57F1 | 4.93:1 | AA | Lc -79.0 | Fine for body text |
| Black text on #6B57F1 | 4.25:1 | AA large text | Lc 30.5 | Non-text elements, placeholder text |
| #6B57F1 text on white | 4.93:1 | AA | Lc 73.6 | Content text, not long reading |
| #6B57F1 text on black | 4.25:1 | 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
#F4F5FE
oklch(97.2% 0.012 281.1)
-
Step 100
100
#E6E8FD
oklch(93.6% 0.028 281.5)
-
Step 200
200
#D3D5FD
oklch(88.4% 0.055 283)
-
Step 300
300
#B7B9FF
oklch(80.9% 0.098 282.7)
-
Step 400
400
#9491FF
oklch(70.7% 0.158 282.8)
-
Step 500
500
#7C71FE
oklch(63.1% 0.203 282.4)
-
Step 600
600 (this color)
#6B57F1
oklch(56.7% 0.221 282.7)
-
Step 700
700
#5742CE
oklch(49% 0.205 282.6)
-
Step 800
800
#4738A7
oklch(42.7% 0.17 282.6)
-
Step 900
900
#3B3284
oklch(37.7% 0.132 283)
-
Step 950
950
#221E4D
oklch(26.9% 0.084 283.1)
#6B57F1 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) | #0075F6 | 0.096 |
| Deuteranopia (no green cones) | #006BEE | 0.091 |
| Tritanopia (no blue cones) | #277E9C | 0.188 |
| Achromatopsia (no color) | #707070 | 0.222 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6B57F1
#6B57F1
oklch(56.7% 0.221 282.7)
- #847800
#847800
oklch(56.6% 0.119 102.5)
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 #6B57F1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.047
- Purpley #8756E4 ΔE 0.050
- Dark Periwinkle #665FD1 ΔE 0.053
- Light Indigo #6D5ACF ΔE 0.053
- Neon Blue #4361EE ΔE 0.053
- Slate Blue #6A5ACD ΔE 0.056
- Warm Blue #4B57DB ΔE 0.057
- Royal Blue #4169E1 ΔE 0.067
Use #6B57F1 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.