#6A51AB
Closest named color: Iris (#6258C4). oklch(50.5% 0.139 293.6), rgb(106, 81, 171).
Aa
White text reads best on this color (6.21:1).
About this color
#6A51AB is a medium-dark, moderately saturated purple. In OKLCH its lightness is 50%, its chroma 0.139 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.042 away. White text reads best on it, at 6.21:1.
| Hue family | Purples |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.139) |
| Temperature | in between |
| Nearest name | Iris (#6258C4) |
| Black text | 3.37:1 |
| White text | 6.21:1 |
Values
| HEX | #6A51AB |
| RGB | rgb(106, 81, 171) |
| HSL | hsl(257, 36%, 49%) |
| OKLCH | oklch(50.5% 0.139 293.6) |
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 #6A51AB | 6.21:1 | AA | Lc -85.9 | Fine for body text |
| Black text on #6A51AB | 3.37:1 | AA large text | Lc 23.3 | Dividers and decoration only |
| #6A51AB text on white | 6.21:1 | AA | Lc 80.8 | Fine for body text |
| #6A51AB text on black | 3.37:1 | AA large text | Lc -21.1 | 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 700.
-
Step 50
50
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#EAE8F6
oklch(93.7% 0.019 292.6)
-
Step 200
200
#DAD5F0
oklch(88.5% 0.037 294.1)
-
Step 300
300
#C2B9E9
oklch(80.9% 0.068 293.4)
-
Step 400
400
#A493DD
oklch(70.6% 0.108 294)
-
Step 500
500
#8E77D4
oklch(63.1% 0.137 293.4)
-
Step 600
600
#795EC1
oklch(55.6% 0.149 293.5)
-
Step 700
700 (this color)
#6A51AB
oklch(50.5% 0.139 293.6)
-
Step 800
800
#534087
oklch(42.8% 0.114 293.3)
-
Step 900
900
#45376C
oklch(37.8% 0.089 293.9)
-
Step 950
950
#28203F
oklch(26.9% 0.057 294.1)
#6A51AB 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) | #2C62AE | 0.085 |
| Deuteranopia (no green cones) | #315FA9 | 0.080 |
| Tritanopia (no blue cones) | #5A6376 | 0.111 |
| Achromatopsia (no color) | #616161 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6A51AB
#6A51AB
oklch(50.5% 0.139 293.6)
- #656B00
#656B00
oklch(50.5% 0.113 113.6)
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 #6A51AB, closest first.
No curated palette has a color within ΔE 0.04 of #6A51AB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.042
- Slate Blue #6A5ACD ΔE 0.055
- Light Indigo #6D5ACF ΔE 0.058
- Bluey Purple #6241C7 ΔE 0.061
- Dark Periwinkle #665FD1 ΔE 0.065
- Twilight #4E518B ΔE 0.069
- Rebecca Purple #663399 ΔE 0.073
- Deep Lavender #8D5EB7 ΔE 0.073
Use #6A51AB 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.