#663174
Closest named color: Rebecca Purple (#663399). oklch(41.2% 0.121 318.9), rgb(102, 49, 116).
Aa
White text reads best on this color (9.30:1).
About this color
#663174 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.121 and its hue 319°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.061 away. White text reads best on it, at 9.30:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.121) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.25:1 |
| White text | 9.30:1 |
Values
| HEX | #663174 |
| RGB | rgb(102, 49, 116) |
| HSL | hsl(287, 41%, 32%) |
| OKLCH | oklch(41.2% 0.121 318.9) |
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 #663174 | 9.30:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #663174 | 2.25:1 | Fails | Lc 12.9 | Not readable |
| #663174 text on white | 9.30:1 | AAA | Lc 91.1 | Preferred for body text |
| #663174 text on black | 2.25:1 | Fails | Lc -11.3 | 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
#F8F3FA
oklch(97% 0.011 316.5)
-
Step 100
100
#F0E6F3
oklch(93.7% 0.02 318.4)
-
Step 200
200
#E5D1EA
oklch(88.5% 0.04 319.5)
-
Step 300
300
#D5B3DE
oklch(81% 0.07 319.1)
-
Step 400
400
#BF89CE
oklch(70.7% 0.114 318.8)
-
Step 500
500
#AE6AC1
oklch(63.1% 0.145 318.6)
-
Step 600
600
#9950AD
oklch(55.6% 0.157 318.6)
-
Step 700
700
#834094
oklch(49.2% 0.146 319.1)
-
Step 800
800 (this color)
#663174
oklch(41.2% 0.121 318.9)
-
Step 900
900
#562F61
oklch(37.6% 0.094 318.5)
-
Step 950
950
#331C39
oklch(27.1% 0.06 319.1)
#663174 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) | #234376 | 0.113 |
| Deuteranopia (no green cones) | #354972 | 0.100 |
| Tritanopia (no blue cones) | #663B4D | 0.077 |
| Achromatopsia (no color) | #474747 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #663174
#663174
oklch(41.2% 0.121 318.9)
- #22590B
#22590B
oklch(41.1% 0.121 138.8)
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 #663174, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.070
- Purple #800080 ΔE 0.077
- Rich Purple #720058 ΔE 0.079
- Grape Purple #5D1451 ΔE 0.080
- Velvet #750851 ΔE 0.081
- Blueberry #464196 ΔE 0.084
- Light Eggplant #894585 ΔE 0.090
Use #663174 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.