#66319F
Closest named color: Rebecca Purple (#663399). oklch(44.2% 0.17 301.9), rgb(102, 49, 159).
Aa
White text reads best on this color (8.38:1).
About this color
#66319F is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.170 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.011 away. White text reads best on it, at 8.38:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.170) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.50:1 |
| White text | 8.38:1 |
Values
| HEX | #66319F |
| RGB | rgb(102, 49, 159) |
| HSL | hsl(269, 53%, 41%) |
| OKLCH | oklch(44.2% 0.17 301.9) |
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 #66319F | 8.38:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #66319F | 2.50:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #66319F text on white | 8.38:1 | AAA | Lc 88.3 | Fine for body text |
| #66319F text on black | 2.50:1 | Fails | Lc -13.9 | Not readable |
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 800.
-
Step 50
50
#F7F4FD
oklch(97.2% 0.012 301.3)
-
Step 100
100
#EDE6FA
oklch(93.6% 0.028 301.7)
-
Step 200
200
#DFD1F8
oklch(88.4% 0.055 301.6)
-
Step 300
300
#CCB2F6
oklch(80.9% 0.098 301.8)
-
Step 400
400
#B386F2
oklch(70.7% 0.158 301.7)
-
Step 500
500
#A262ED
oklch(63.1% 0.203 302.1)
-
Step 600
600
#8D43DC
oklch(55.6% 0.221 301.6)
-
Step 700
700
#7833BF
oklch(49.1% 0.205 301.6)
-
Step 800
800 (this color)
#66319F
oklch(44.2% 0.17 301.9)
-
Step 900
900
#502A7B
oklch(37.8% 0.133 302)
-
Step 950
950
#2E1A48
oklch(27% 0.083 301.1)
#66319F 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) | #004DA2 | 0.125 |
| Deuteranopia (no green cones) | #004D9D | 0.126 |
| Tritanopia (no blue cones) | #5A4A64 | 0.125 |
| Achromatopsia (no color) | #4E4E4E | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66319F
#66319F
oklch(44.2% 0.17 301.9)
- #4A5C00
#4A5C00
oklch(44.4% 0.107 121.9)
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 #66319F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.011
- Grape #7209B7 ΔE 0.059
- Blueberry #464196 ΔE 0.065
- Chrysanthemum #560BAD ΔE 0.065
- Dark Slate Blue #483D8B ΔE 0.066
- Bluey Purple #6241C7 ΔE 0.071
- Blue With A Hint Of Purple #533CC6 ΔE 0.075
- Blurple #5539CC ΔE 0.081
Use #66319F 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.