#661D57
Closest named color: Grape Purple (#5D1451). oklch(36.9% 0.126 337.1), rgb(102, 29, 87).
Aa
White text reads best on this color (11.18:1).
About this color
#661D57 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.126 and its hue 337°. Its hue sits on the warm side of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.028 away. White text reads best on it, at 11.18:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.126) |
| Temperature | warm |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.87:1 |
| White text | 11.18:1 |
Values
| HEX | #661D57 |
| RGB | rgb(102, 29, 87) |
| HSL | hsl(312, 56%, 26%) |
| OKLCH | oklch(36.9% 0.126 337.1) |
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 #661D57 | 11.18:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #661D57 | 1.87:1 | Fails | Lc 8.9 | Not readable |
| #661D57 text on white | 11.18:1 | AAA | Lc 95.0 | Preferred for body text |
| #661D57 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
#FBF2F8
oklch(97% 0.012 337.5)
-
Step 100
100
#F7E3F1
oklch(93.6% 0.028 336.4)
-
Step 200
200
#F1CDE6
oklch(88.6% 0.052 337.2)
-
Step 300
300
#E9A9D7
oklch(80.9% 0.095 337.1)
-
Step 400
400
#DB79C2
oklch(70.8% 0.15 337.4)
-
Step 500
500
#CE51B3
oklch(63.1% 0.193 337)
-
Step 600
600
#B92E9E
oklch(55.6% 0.209 337.2)
-
Step 700
700
#9F1E87
oklch(49.1% 0.194 337.2)
-
Step 800
800
#811D6E
oklch(42.7% 0.161 337)
-
Step 900
900 (this color)
#661D57
oklch(36.9% 0.126 337.1)
-
Step 950
950
#3D1434
oklch(26.9% 0.079 337)
#661D57 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) | #1F3459 | 0.135 |
| Deuteranopia (no green cones) | #373F55 | 0.117 |
| Tritanopia (no blue cones) | #6C2137 | 0.061 |
| Achromatopsia (no color) | #3B3B3B | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #661D57
#661D57
oklch(36.9% 0.126 337.1)
- #004D2C
#004D2C
oklch(37% 0.088 157)
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 #661D57, 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 0.036
- Velvet #750851 ΔE 0.037
- Merlot #730039 ΔE 0.059
- Red Purple #820747 ΔE 0.066
- Wine #80013F ΔE 0.069
- Plum Purple #4E0550 ΔE 0.071
- Deep Violet #490648 ΔE 0.083
Use #661D57 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.