#6C55C5
Closest named color: Slate Blue (#6A5ACD). oklch(53.1% 0.167 288.8), rgb(108, 85, 197).
Aa
White text reads best on this color (5.61:1).
About this color
#6C55C5 is a medium-dark, vivid purple. In OKLCH its lightness is 53%, its chroma 0.167 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Slate Blue (#6A5ACD), ΔE 0.016 away. White text reads best on it, at 5.61:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Slate Blue (#6A5ACD) |
| Black text | 3.74:1 |
| White text | 5.61:1 |
Values
| HEX | #6C55C5 |
| RGB | rgb(108, 85, 197) |
| HSL | hsl(252, 49%, 55%) |
| OKLCH | oklch(53.1% 0.167 288.8) |
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 #6C55C5 | 5.61:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #6C55C5 | 3.74:1 | AA large text | Lc 26.3 | Dividers and decoration only |
| #6C55C5 text on white | 5.61:1 | AA | Lc 77.7 | Fine for body text |
| #6C55C5 text on black | 3.74:1 | AA large text | Lc -24.0 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D7D5F4
oklch(88.4% 0.042 288.5)
-
Step 300
300
#BEB9EF
oklch(80.8% 0.076 288.8)
-
Step 400
400
#9E93E7
oklch(70.6% 0.121 288.9)
-
Step 500
500
#8876E0
oklch(63.1% 0.155 289)
-
Step 600
600 (this color)
#6C55C5
oklch(53.1% 0.167 288.8)
-
Step 700
700
#614CB2
oklch(49.2% 0.155 288.9)
-
Step 800
800
#4F3F90
oklch(42.8% 0.129 288.9)
-
Step 900
900
#413673
oklch(37.7% 0.101 288.9)
-
Step 950
950
#262043
oklch(27% 0.064 289.3)
#6C55C5 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) | #0D6AC9 | 0.098 |
| Deuteranopia (no green cones) | #1265C3 | 0.096 |
| Tritanopia (no blue cones) | #516E85 | 0.138 |
| Achromatopsia (no color) | #686868 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C55C5
#6C55C5
oklch(53.1% 0.167 288.8)
- #727100
#727100
oklch(53.2% 0.116 109.1)
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 #6C55C5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Blue #6A5ACD ΔE 0.016
- Iris #6258C4 ΔE 0.017
- Light Indigo #6D5ACF ΔE 0.019
- Dark Periwinkle #665FD1 ΔE 0.029
- Bluey Purple #6241C7 ΔE 0.049
- Warm Blue #4B57DB ΔE 0.059
- Purpley #8756E4 ΔE 0.065
- Deep Lavender #8D5EB7 ΔE 0.068
Use #6C55C5 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.