#661B72
Closest named color: Rich Purple (#720058). oklch(38.4% 0.152 321.8), rgb(102, 27, 114).
Aa
White text reads best on this color (10.68:1).
About this color
#661B72 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.152 and its hue 322°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Purple (#720058), ΔE 0.055 away. White text reads best on it, at 10.68:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.152) |
| Temperature | in between |
| Nearest name | Rich Purple (#720058) |
| Black text | 1.96:1 |
| White text | 10.68:1 |
Values
| HEX | #661B72 |
| RGB | rgb(102, 27, 114) |
| HSL | hsl(292, 62%, 28%) |
| OKLCH | oklch(38.4% 0.152 321.8) |
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 #661B72 | 10.68:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #661B72 | 1.96:1 | Fails | Lc 10.1 | Not readable |
| #661B72 text on white | 10.68:1 | AAA | Lc 93.8 | Preferred for body text |
| #661B72 text on black | 1.96:1 | Fails | Lc -8.7 | 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
#F5E3F7
oklch(93.6% 0.033 322.8)
-
Step 200
200
#EDCCF3
oklch(88.5% 0.063 321.1)
-
Step 300
300
#E3A8ED
oklch(80.9% 0.114 321.5)
-
Step 400
400
#D375E3
oklch(70.7% 0.181 321.6)
-
Step 500
500
#C648DB
oklch(63.1% 0.232 321.6)
-
Step 600
600
#B218C8
oklch(55.7% 0.253 321.9)
-
Step 700
700
#9800AC
oklch(49.1% 0.233 321.9)
-
Step 800
800
#7C0C8C
oklch(42.7% 0.195 321.9)
-
Step 900
900 (this color)
#661B72
oklch(38.4% 0.152 321.8)
-
Step 950
950
#3B1142
oklch(27.1% 0.097 321.7)
#661B72 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) | #003974 | 0.154 |
| Deuteranopia (no green cones) | #274170 | 0.132 |
| Tritanopia (no blue cones) | #672B45 | 0.091 |
| Achromatopsia (no color) | #3E3E3E | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #661B72
#661B72
oklch(38.4% 0.152 321.8)
- #075300
#075300
oklch(38.4% 0.129 141.8)
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 #661B72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Purple #720058 ΔE 0.055
- Purple #800080 ΔE 0.059
- Grape Purple #5D1451 ΔE 0.059
- Velvet #750851 ΔE 0.067
- Royal Purple #4B006E ΔE 0.073
- Rebecca Purple #663399 ΔE 0.076
- Indigo #4B0082 ΔE 0.078
- Plum Purple #4E0550 ΔE 0.084
Use #661B72 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.