#663194
Closest named color: Rebecca Purple (#663399). oklch(43.4% 0.157 305.3), rgb(102, 49, 148).
Aa
White text reads best on this color (8.63:1).
About this color
#663194 is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.157 and its hue 305°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.009 away. White text reads best on it, at 8.63:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.157) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.43:1 |
| White text | 8.63:1 |
Values
| HEX | #663194 |
| RGB | rgb(102, 49, 148) |
| HSL | hsl(272, 50%, 39%) |
| OKLCH | oklch(43.4% 0.157 305.3) |
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 #663194 | 8.63:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #663194 | 2.43:1 | Fails | Lc 14.9 | Not readable |
| #663194 text on white | 8.63:1 | AAA | Lc 89.1 | Fine for body text |
| #663194 text on black | 2.43:1 | Fails | Lc -13.1 | 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
#F7F3FC
oklch(97% 0.013 306)
-
Step 100
100
#EEE6F9
oklch(93.7% 0.027 304.8)
-
Step 200
200
#E1D1F5
oklch(88.5% 0.052 305.4)
-
Step 300
300
#CFB2F1
oklch(81% 0.092 305.4)
-
Step 400
400
#B787E9
oklch(70.8% 0.146 305.5)
-
Step 500
500
#A564E2
oklch(63% 0.188 305.5)
-
Step 600
600
#9147D0
oklch(55.7% 0.204 305.5)
-
Step 700
700
#7B37B4
oklch(49.1% 0.19 305.3)
-
Step 800
800 (this color)
#663194
oklch(43.4% 0.157 305.3)
-
Step 900
900
#512B74
oklch(37.6% 0.123 305.2)
-
Step 950
950
#301A44
oklch(27% 0.078 306)
#663194 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) | #004A97 | 0.127 |
| Deuteranopia (no green cones) | #154C92 | 0.121 |
| Tritanopia (no blue cones) | #5E465E | 0.113 |
| Achromatopsia (no color) | #4C4C4C | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #663194
#663194
oklch(43.4% 0.157 305.3)
- #435B00
#435B00
oklch(43.5% 0.11 125.4)
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 #663194, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.009
- Dark Slate Blue #483D8B ΔE 0.060
- Blueberry #464196 ΔE 0.064
- Grape #7209B7 ΔE 0.072
- Chrysanthemum #560BAD ΔE 0.075
- Purple #800080 ΔE 0.080
- Twilight #4E518B ΔE 0.087
- Dark Magenta #8B008B ΔE 0.087
Use #663194 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.