#661B5B
Closest named color: Grape Purple (#5D1451). oklch(36.9% 0.132 334.4), rgb(102, 27, 91).
Aa
White text reads best on this color (11.21:1).
About this color
#661B5B is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.132 and its hue 334°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.028 away. White text reads best on it, at 11.21:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.132) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.87:1 |
| White text | 11.21:1 |
Values
| HEX | #661B5B |
| RGB | rgb(102, 27, 91) |
| HSL | hsl(309, 58%, 25%) |
| OKLCH | oklch(36.9% 0.132 334.4) |
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 #661B5B | 11.21:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #661B5B | 1.87:1 | Fails | Lc 8.9 | Not readable |
| #661B5B text on white | 11.21:1 | AAA | Lc 95.0 | Preferred for body text |
| #661B5B text on black | 1.87:1 | Fails | Lc -7.6 | 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
#FBF2F9
oklch(97% 0.013 333)
-
Step 100
100
#F7E3F2
oklch(93.6% 0.029 334.4)
-
Step 200
200
#F1CCE8
oklch(88.5% 0.055 334.6)
-
Step 300
300
#E8A9DB
oklch(80.9% 0.098 334)
-
Step 400
400
#DB77C8
oklch(70.7% 0.159 334.6)
-
Step 500
500
#CE4EBA
oklch(63.1% 0.202 334.4)
-
Step 600
600
#B928A6
oklch(55.6% 0.22 334.3)
-
Step 700
700
#9F188E
oklch(49.1% 0.204 334.4)
-
Step 800
800
#811973
oklch(42.7% 0.168 334.4)
-
Step 900
900 (this color)
#661B5B
oklch(36.9% 0.132 334.4)
-
Step 950
950
#3D1337
oklch(27% 0.083 333.6)
#661B5B 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) | #1A345D | 0.142 |
| Deuteranopia (no green cones) | #343F59 | 0.122 |
| Tritanopia (no blue cones) | #6B2138 | 0.067 |
| Achromatopsia (no color) | #3B3B3B | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #661B5B
#661B5B
oklch(36.9% 0.132 334.4)
- #004D28
#004D28
oklch(36.9% 0.092 154.4)
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 #661B5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.028
- Rich Purple #720058 ΔE 0.034
- Velvet #750851 ΔE 0.038
- Merlot #730039 ΔE 0.065
- Plum Purple #4E0550 ΔE 0.069
- Red Purple #820747 ΔE 0.069
- Wine #80013F ΔE 0.074
- Deep Violet #490648 ΔE 0.082
Use #661B5B 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.