#6A66B7
Closest named color: Iris (#6258C4). oklch(55.1% 0.124 283.8), rgb(106, 102, 183).
Aa
White text reads best on this color (5.00:1).
About this color
#6A66B7 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 55%, its chroma 0.124 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.046 away. White text reads best on it, at 5.00:1.
| Hue family | Purples |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 4.19:1 |
| White text | 5.00:1 |
Values
| HEX | #6A66B7 |
| RGB | rgb(106, 102, 183) |
| HSL | hsl(243, 36%, 56%) |
| OKLCH | oklch(55.1% 0.124 283.8) |
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 #6A66B7 | 5.00:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #6A66B7 | 4.19:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #6A66B7 text on white | 5.00:1 | AA | Lc 74.5 | Content text, not long reading |
| #6A66B7 text on black | 4.19:1 | AA large text | Lc -27.2 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E8E9F5
oklch(93.7% 0.016 282.3)
-
Step 200
200
#D6D7ED
oklch(88.5% 0.03 283.7)
-
Step 300
300
#BBBCE4
oklch(80.8% 0.056 283.9)
-
Step 400
400
#9999D7
oklch(70.6% 0.09 283.9)
-
Step 500
500
#817FCC
oklch(63.1% 0.114 283.8)
-
Step 600
600 (this color)
#6A66B7
oklch(55.1% 0.124 283.8)
-
Step 700
700
#5A569F
oklch(49.2% 0.114 283.8)
-
Step 800
800
#494681
oklch(42.6% 0.096 283.9)
-
Step 900
900
#3D3B67
oklch(37.6% 0.074 284.3)
-
Step 950
950
#24233D
oklch(27.1% 0.048 284.5)
#6A66B7 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) | #4872BA | 0.050 |
| Deuteranopia (no green cones) | #456DB5 | 0.049 |
| Tritanopia (no blue cones) | #537685 | 0.106 |
| Achromatopsia (no color) | #6F6F6F | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6A66B7
#6A66B7
oklch(55.1% 0.124 283.8)
- #7E7400
#7E7400
oklch(55.1% 0.116 103.5)
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 #6A66B7, closest first.
No curated palette has a color within ΔE 0.04 of #6A66B7.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.046
- Dark Periwinkle #665FD1 ΔE 0.047
- Slate Blue #6A5ACD ΔE 0.049
- Light Indigo #6D5ACF ΔE 0.051
- French Blue #436BAD ΔE 0.054
- Deep Lavender #8D5EB7 ΔE 0.058
- Dark Lavender #856798 ΔE 0.065
- Windows Blue #3778BF ΔE 0.069
Use #6A66B7 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.