#6D51E5
Closest named color: Light Indigo (#6D5ACF). oklch(55% 0.213 285.7), rgb(109, 81, 229).
Aa
White text reads best on this color (5.30:1).
About this color
#6D51E5 is a medium-dark, vivid purple. In OKLCH its lightness is 55%, its chroma 0.213 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Light Indigo (#6D5ACF), ΔE 0.040 away. White text reads best on it, at 5.30:1.
| Hue family | Purples |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.213) |
| Temperature | cool |
| Nearest name | Light Indigo (#6D5ACF) |
| Black text | 3.95:1 |
| White text | 5.30:1 |
Values
| HEX | #6D51E5 |
| RGB | rgb(109, 81, 229) |
| HSL | hsl(251, 74%, 61%) |
| OKLCH | oklch(55% 0.213 285.7) |
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 #6D51E5 | 5.30:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #6D51E5 | 3.95:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #6D51E5 text on white | 5.30:1 | AA | Lc 75.8 | Fine for body text |
| #6D51E5 text on black | 3.95:1 | AA large text | Lc -25.9 | 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
#F4F4FE
oklch(97% 0.013 286.1)
-
Step 100
100
#E8E8FC
oklch(93.7% 0.027 285.9)
-
Step 200
200
#D5D5FC
oklch(88.5% 0.053 285.3)
-
Step 300
300
#BAB8FC
oklch(80.9% 0.095 285.4)
-
Step 400
400
#9990FB
oklch(70.7% 0.153 285.6)
-
Step 500
500
#8370F8
oklch(63.1% 0.195 285.7)
-
Step 600
600 (this color)
#6D51E5
oklch(55% 0.213 285.7)
-
Step 700
700
#5D42C9
oklch(49.1% 0.198 285.7)
-
Step 800
800
#4C38A2
oklch(42.7% 0.163 285.9)
-
Step 900
900
#3E3281
oklch(37.7% 0.128 285.4)
-
Step 950
950
#241E4B
oklch(26.9% 0.08 285.8)
#6D51E5 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) | #006FEA | 0.103 |
| Deuteranopia (no green cones) | #0067E2 | 0.099 |
| Tritanopia (no blue cones) | #3C7694 | 0.177 |
| Achromatopsia (no color) | #6B6B6B | 0.214 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6D51E5
#6D51E5
oklch(55% 0.213 285.7)
- #7B7500
#7B7500
oklch(55% 0.117 106.1)
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 #6D51E5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Indigo #6D5ACF ΔE 0.040
- Slate Blue #6A5ACD ΔE 0.042
- Dark Periwinkle #665FD1 ΔE 0.045
- Purpley #8756E4 ΔE 0.046
- Warm Blue #4B57DB ΔE 0.052
- Burple #6832E3 ΔE 0.055
- Iris #6258C4 ΔE 0.056
- Medium Slate Blue #7B68EE ΔE 0.058
Use #6D51E5 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.