#6D51DB
Closest named color: Light Indigo (#6D5ACF). oklch(54.2% 0.201 287), rgb(109, 81, 219).
Aa
White text reads best on this color (5.45:1).
About this color
#6D51DB is a medium-dark, vivid purple. In OKLCH its lightness is 54%, its chroma 0.201 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Light Indigo (#6D5ACF), ΔE 0.028 away. White text reads best on it, at 5.45:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.201) |
| Temperature | cool |
| Nearest name | Light Indigo (#6D5ACF) |
| Black text | 3.85:1 |
| White text | 5.45:1 |
Values
| HEX | #6D51DB |
| RGB | rgb(109, 81, 219) |
| HSL | hsl(252, 66%, 59%) |
| OKLCH | oklch(54.2% 0.201 287) |
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 #6D51DB | 5.45:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #6D51DB | 3.85:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #6D51DB text on white | 5.45:1 | AA | Lc 76.7 | Fine for body text |
| #6D51DB text on black | 3.85:1 | AA large text | Lc -25.0 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E8E8FB
oklch(93.7% 0.026 285.9)
-
Step 200
200
#D6D5F9
oklch(88.5% 0.049 286.6)
-
Step 300
300
#BCB8F9
oklch(80.9% 0.091 287)
-
Step 400
400
#9B91F5
oklch(70.7% 0.144 286.7)
-
Step 500
500
#8571F1
oklch(63% 0.185 287)
-
Step 600
600 (this color)
#6D51DB
oklch(54.2% 0.201 287)
-
Step 700
700
#5F45C2
oklch(49.1% 0.186 287)
-
Step 800
800
#4D399D
oklch(42.6% 0.155 287.1)
-
Step 900
900
#40337D
oklch(37.8% 0.12 287.2)
-
Step 950
950
#251F49
oklch(27.1% 0.075 286.8)
#6D51DB 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) | #006DDF | 0.104 |
| Deuteranopia (no green cones) | #0066D8 | 0.101 |
| Tritanopia (no blue cones) | #45728F | 0.165 |
| Achromatopsia (no color) | #696969 | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6D51DB
#6D51DB
oklch(54.2% 0.201 287)
- #777300
#777300
oklch(54.2% 0.116 107.3)
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 #6D51DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Indigo #6D5ACF ΔE 0.028
- Slate Blue #6A5ACD ΔE 0.030
- Dark Periwinkle #665FD1 ΔE 0.036
- Iris #6258C4 ΔE 0.042
- Purpley #8756E4 ΔE 0.048
- Warm Blue #4B57DB ΔE 0.050
- Bluey Purple #6241C7 ΔE 0.050
- Burple #6832E3 ΔE 0.057
Use #6D51DB 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.