#661B75
Closest named color: Purple (#800080). oklch(38.6% 0.154 320.3), rgb(102, 27, 117).
Aa
White text reads best on this color (10.61:1).
About this color
#661B75 is a dark, vivid purple. In OKLCH its lightness is 39%, its chroma 0.154 and its hue 320°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple (#800080), ΔE 0.058 away. White text reads best on it, at 10.61:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Purple (#800080) |
| Black text | 1.97:1 |
| White text | 10.61:1 |
Values
| HEX | #661B75 |
| RGB | rgb(102, 27, 117) |
| HSL | hsl(290, 63%, 28%) |
| OKLCH | oklch(38.6% 0.154 320.3) |
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 #661B75 | 10.61:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #661B75 | 1.97:1 | Fails | Lc 10.3 | Not readable |
| #661B75 text on white | 10.61:1 | AAA | Lc 93.6 | Preferred for body text |
| #661B75 text on black | 1.97:1 | Fails | Lc -8.9 | 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
#EDCCF4
oklch(88.5% 0.065 320.3)
-
Step 300
300
#E2A8EF
oklch(80.9% 0.116 320.1)
-
Step 400
400
#D274E6
oklch(70.6% 0.185 320.4)
-
Step 500
500
#C547DF
oklch(63.1% 0.236 320.3)
-
Step 600
600
#B014CC
oklch(55.5% 0.257 320.3)
-
Step 700
700
#9700AF
oklch(49.1% 0.235 320.6)
-
Step 800
800
#7B0A8F
oklch(42.7% 0.198 320.4)
-
Step 900
900 (this color)
#661B75
oklch(38.6% 0.154 320.3)
-
Step 950
950
#3A1143
oklch(27% 0.097 319.9)
#661B75 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) | #003977 | 0.153 |
| Deuteranopia (no green cones) | #244173 | 0.134 |
| Tritanopia (no blue cones) | #662D47 | 0.094 |
| Achromatopsia (no color) | #3E3E3E | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #661B75
#661B75
oklch(38.6% 0.154 320.3)
- #125300
#125300
oklch(38.7% 0.126 140.4)
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 #661B75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple #800080 ΔE 0.058
- Rich Purple #720058 ΔE 0.059
- Grape Purple #5D1451 ΔE 0.064
- Velvet #750851 ΔE 0.071
- Rebecca Purple #663399 ΔE 0.072
- Royal Purple #4B006E ΔE 0.073
- Indigo #4B0082 ΔE 0.076
- Dark Magenta #8B008B ΔE 0.083
Use #661B75 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.