#66349D
Closest named color: Rebecca Purple (#663399). oklch(44.5% 0.164 302), rgb(102, 52, 157).
Aa
White text reads best on this color (8.25:1).
About this color
#66349D is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.164 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 0.007 away. White text reads best on it, at 8.25:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.164) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.54:1 |
| White text | 8.25:1 |
Values
| HEX | #66349D |
| RGB | rgb(102, 52, 157) |
| HSL | hsl(269, 50%, 41%) |
| OKLCH | oklch(44.5% 0.164 302) |
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 #66349D | 8.25:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #66349D | 2.54:1 | Fails | Lc 16.0 | Dividers and decoration only |
| #66349D text on white | 8.25:1 | AAA | Lc 88.0 | Fine for body text |
| #66349D text on black | 2.54:1 | Fails | Lc -14.2 | 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
#DFD1F7
oklch(88.4% 0.054 302.1)
-
Step 300
300
#CCB2F4
oklch(80.9% 0.095 302.4)
-
Step 400
400
#B387EF
oklch(70.7% 0.153 302.2)
-
Step 500
500
#A164EA
oklch(63.1% 0.197 302.1)
-
Step 600
600
#8C46D8
oklch(55.5% 0.213 301.8)
-
Step 700
700
#7836BB
oklch(49.1% 0.198 302.2)
-
Step 800
800 (this color)
#66349D
oklch(44.5% 0.164 302)
-
Step 900
900
#4F2B78
oklch(37.6% 0.127 302.2)
-
Step 950
950
#2E1A47
oklch(27% 0.082 301.7)
#66349D 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) | #004EA0 | 0.123 |
| Deuteranopia (no green cones) | #054E9B | 0.123 |
| Tritanopia (no blue cones) | #5B4B64 | 0.120 |
| Achromatopsia (no color) | #4E4E4E | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66349D
#66349D
oklch(44.5% 0.164 302)
- #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 #66349D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.007
- Blueberry #464196 ΔE 0.062
- Dark Slate Blue #483D8B ΔE 0.063
- Grape #7209B7 ΔE 0.065
- Chrysanthemum #560BAD ΔE 0.071
- Bluey Purple #6241C7 ΔE 0.072
- Blue With A Hint Of Purple #533CC6 ΔE 0.076
- Blurple #5539CC ΔE 0.083
Use #66349D 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.