#6C51D3
Closest named color: Light Indigo (#6D5ACF). oklch(53.5% 0.191 287.7), rgb(108, 81, 211).
Aa
White text reads best on this color (5.59:1).
About this color
#6C51D3 is a medium-dark, vivid purple. In OKLCH its lightness is 53%, its chroma 0.191 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Light Indigo (#6D5ACF), ΔE 0.022 away. White text reads best on it, at 5.59:1.
| Hue family | Purples |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Light Indigo (#6D5ACF) |
| Black text | 3.75:1 |
| White text | 5.59:1 |
Values
| HEX | #6C51D3 |
| RGB | rgb(108, 81, 211) |
| HSL | hsl(252, 60%, 57%) |
| OKLCH | oklch(53.5% 0.191 287.7) |
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 #6C51D3 | 5.59:1 | AA | Lc -82.8 | Fine for body text |
| Black text on #6C51D3 | 3.75:1 | AA large text | Lc 26.6 | Dividers and decoration only |
| #6C51D3 text on white | 5.59:1 | AA | Lc 77.5 | Fine for body text |
| #6C51D3 text on black | 3.75:1 | AA large text | Lc -24.3 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E8E8FA
oklch(93.6% 0.024 285.9)
-
Step 200
200
#D7D5F8
oklch(88.6% 0.048 288)
-
Step 300
300
#BDB8F6
oklch(80.8% 0.087 288)
-
Step 400
400
#9D91F1
oklch(70.7% 0.138 288.1)
-
Step 500
500
#8673EC
oklch(63.1% 0.176 287.5)
-
Step 600
600 (this color)
#6C51D3
oklch(53.5% 0.191 287.7)
-
Step 700
700
#6047BD
oklch(49.1% 0.177 287.8)
-
Step 800
800
#4E3B99
oklch(42.7% 0.147 287.8)
-
Step 900
900
#40347A
oklch(37.7% 0.115 287.5)
-
Step 950
950
#251F47
oklch(26.9% 0.072 287.4)
#6C51D3 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) | #006BD7 | 0.103 |
| Deuteranopia (no green cones) | #0064D0 | 0.101 |
| Tritanopia (no blue cones) | #48708A | 0.159 |
| Achromatopsia (no color) | #686868 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6C51D3
#6C51D3
oklch(53.5% 0.191 287.7)
- #757100
#757100
oklch(53.5% 0.115 107.3)
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 #6C51D3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Indigo #6D5ACF ΔE 0.022
- Slate Blue #6A5ACD ΔE 0.023
- Iris #6258C4 ΔE 0.032
- Dark Periwinkle #665FD1 ΔE 0.032
- Bluey Purple #6241C7 ΔE 0.043
- Warm Blue #4B57DB ΔE 0.050
- Purpley #8756E4 ΔE 0.054
- Burple #6832E3 ΔE 0.061
Use #6C51D3 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.