#641C71
Closest named color: Rich Purple (#720058). oklch(38.1% 0.149 321.1), rgb(100, 28, 113).
Aa
White text reads best on this color (10.78:1).
About this color
#641C71 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.149 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 0.056 away. White text reads best on it, at 10.78:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Rich Purple (#720058) |
| Black text | 1.94:1 |
| White text | 10.78:1 |
Values
| HEX | #641C71 |
| RGB | rgb(100, 28, 113) |
| HSL | hsl(291, 60%, 28%) |
| OKLCH | oklch(38.1% 0.149 321.1) |
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 #641C71 | 10.78:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #641C71 | 1.94:1 | Fails | Lc 9.8 | Not readable |
| #641C71 text on white | 10.78:1 | AAA | Lc 94.1 | Preferred for body text |
| #641C71 text on black | 1.94:1 | Fails | Lc -8.5 | 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
#F4E3F7
oklch(93.5% 0.032 321.1)
-
Step 200
200
#EDCCF2
oklch(88.5% 0.062 321.8)
-
Step 300
300
#E2A9EC
oklch(81% 0.111 321.4)
-
Step 400
400
#D276E3
oklch(70.7% 0.179 321.2)
-
Step 500
500
#C44BDA
oklch(63.1% 0.227 321.1)
-
Step 600
600
#AF1FC8
oklch(55.6% 0.247 320.8)
-
Step 700
700
#9708AD
oklch(49.2% 0.231 321.1)
-
Step 800
800
#7A128C
oklch(42.7% 0.19 320.8)
-
Step 900
900 (this color)
#641C71
oklch(38.1% 0.149 321.1)
-
Step 950
950
#3A1241
oklch(27% 0.093 321.4)
#641C71 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) | #003873 | 0.150 |
| Deuteranopia (no green cones) | #26406F | 0.129 |
| Tritanopia (no blue cones) | #652C45 | 0.090 |
| Achromatopsia (no color) | #3D3D3D | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #641C71
#641C71
oklch(38.1% 0.149 321.1)
- #0D5200
#0D5200
oklch(38.2% 0.126 141.1)
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 #641C71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Purple #720058 ΔE 0.056
- Grape Purple #5D1451 ΔE 0.057
- Purple #800080 ΔE 0.064
- Velvet #750851 ΔE 0.068
- Royal Purple #4B006E ΔE 0.070
- Indigo #4B0082 ΔE 0.076
- Rebecca Purple #663399 ΔE 0.077
- Plum Purple #4E0550 ΔE 0.081
Use #641C71 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.