#661D74
Closest named color: Rich Purple (#720058). oklch(38.7% 0.151 320.7), rgb(102, 29, 116).
Aa
White text reads best on this color (10.53:1).
About this color
#661D74 is a dark, vivid purple. In OKLCH its lightness is 39%, its chroma 0.151 and its hue 321°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Purple (#720058), ΔE 0.059 away. White text reads best on it, at 10.53:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Rich Purple (#720058) |
| Black text | 1.99:1 |
| White text | 10.53:1 |
Values
| HEX | #661D74 |
| RGB | rgb(102, 29, 116) |
| HSL | hsl(290, 60%, 28%) |
| OKLCH | oklch(38.7% 0.151 320.7) |
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 #661D74 | 10.53:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #661D74 | 1.99:1 | Fails | Lc 10.4 | Not readable |
| #661D74 text on white | 10.53:1 | AAA | Lc 93.5 | Preferred for body text |
| #661D74 text on black | 1.99:1 | Fails | Lc -9.0 | 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 900.
-
Step 50
50
#FAF2FC
oklch(97% 0.016 319.4)
-
Step 100
100
#F4E3F8
oklch(93.6% 0.033 319.8)
-
Step 200
200
#EDCCF3
oklch(88.5% 0.063 321.1)
-
Step 300
300
#E2A8EE
oklch(80.9% 0.115 320.5)
-
Step 400
400
#D276E4
oklch(70.8% 0.18 320.9)
-
Step 500
500
#C449DC
oklch(63% 0.231 320.7)
-
Step 600
600
#B01BCA
oklch(55.7% 0.252 320.7)
-
Step 700
700
#9701AF
oklch(49.1% 0.235 320.6)
-
Step 800
800
#7B0F8D
oklch(42.8% 0.194 321)
-
Step 900
900 (this color)
#661D74
oklch(38.7% 0.151 320.7)
-
Step 950
950
#3A1142
oklch(26.9% 0.096 320.7)
#661D74 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) | #003A76 | 0.152 |
| Deuteranopia (no green cones) | #264272 | 0.132 |
| Tritanopia (no blue cones) | #672E47 | 0.092 |
| Achromatopsia (no color) | #3F3F3F | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #661D74
#661D74
oklch(38.7% 0.151 320.7)
- #105300
#105300
oklch(38.6% 0.126 140.7)
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 #661D74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Purple #720058 ΔE 0.059
- Purple #800080 ΔE 0.059
- Grape Purple #5D1451 ΔE 0.063
- Velvet #750851 ΔE 0.070
- Rebecca Purple #663399 ΔE 0.071
- Royal Purple #4B006E ΔE 0.075
- Indigo #4B0082 ΔE 0.078
- Dark Magenta #8B008B ΔE 0.084
Use #661D74 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.